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5031805 = 51006361
BaseRepresentation
bin10011001100011101111101
3100110122100011
4103030131331
52242004210
6255503221
760524662
oct23143575
910418304
105031805
112927519
121827b11
1310723cc
1494da69
15695d8a
hex4cc77d

5031805 has 4 divisors (see below), whose sum is σ = 6038172. Its totient is φ = 4025440.

The previous prime is 5031799. The next prime is 5031809. The reversal of 5031805 is 5081305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1240996 + 3790809 = 1114^2 + 1947^2 .

It is a de Polignac number, because none of the positive numbers 2k-5031805 is a prime.

It is a Smith number, since the sum of its digits (22) 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 (5031809) 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, 503176 + ... + 503185.

It is an arithmetic number, because the mean of its divisors is an integer number (1509543).

Almost surely, 25031805 is an apocalyptic number.

It is an amenable number.

5031805 is a deficient number, since it is larger than the sum of its proper divisors (1006367).

5031805 is a wasteful number, since it uses less digits than its factorization.

5031805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006366.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 5031805 is about 2243.1685179674. The cubic root of 5031805 is about 171.3594004996.

The spelling of 5031805 in words is "five million, thirty-one thousand, eight hundred five".

Divisors: 1 5 1006361 5031805