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53897141 = 73738317
BaseRepresentation
bin1100110110011…
…0011110110101
310202102020222102
43031212132311
5102244202031
65203111445
71223055344
oct315463665
9122366872
1053897141
11284727a1
1216072585
13b2211cc
14722db5b
154ae97cb
hex33667b5

53897141 has 4 divisors (see below), whose sum is σ = 54635532. Its totient is φ = 53158752.

The previous prime is 53897113. The next prime is 53897143. The reversal of 53897141 is 14179835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14179835 = 52835967.

It can be written as a sum of positive squares in 2 ways, for example, as 35450116 + 18447025 = 5954^2 + 4295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53897141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53897095 and 53897104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53897143) 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, 369086 + ... + 369231.

It is an arithmetic number, because the mean of its divisors is an integer number (13658883).

Almost surely, 253897141 is an apocalyptic number.

It is an amenable number.

53897141 is a deficient number, since it is larger than the sum of its proper divisors (738391).

53897141 is an equidigital number, since it uses as much as digits as its factorization.

53897141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738390.

The product of its digits is 30240, while the sum is 38.

The square root of 53897141 is about 7341.4672239274. The cubic root of 53897141 is about 377.7361731352.

It can be divided in two parts, 538 and 97141, that added together give a palindrome (97679).

The spelling of 53897141 in words is "fifty-three million, eight hundred ninety-seven thousand, one hundred forty-one".

Divisors: 1 73 738317 53897141