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9997501 = 26333797
BaseRepresentation
bin100110001000…
…110010111101
3200210220222211
4212020302331
510024410001
6554140421
7150656143
oct46106275
920726884
109997501
1157092a8
123421711
1320c06a7
141483593
15d27351
hex988cbd

9997501 has 4 divisors (see below), whose sum is σ = 10003932. Its totient is φ = 9991072.

The previous prime is 9997483. The next prime is 9997517. The reversal of 9997501 is 1057999.

9997501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1057999 = 3134129.

It can be written as a sum of positive squares in 2 ways, for example, as 688900 + 9308601 = 830^2 + 3051^2 .

It is a cyclic number.

It is not a de Polignac number, because 9997501 - 217 = 9866429 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 735 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (2500983).

Almost surely, 29997501 is an apocalyptic number.

It is an amenable number.

9997501 is a deficient number, since it is larger than the sum of its proper divisors (6431).

9997501 is a wasteful number, since it uses less digits than its factorization.

9997501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 9997501 is about 3161.8825088861. The cubic root of 9997501 is about 215.4255210671.

The spelling of 9997501 in words is "nine million, nine hundred ninety-seven thousand, five hundred one".

Divisors: 1 2633 3797 9997501