524139136 has 16 divisors (see below), whose sum is σ = 1044183690. Its totient is φ = 262069504.

The previous prime is 524139131. The next prime is 524139137. The reversal of 524139136 is 631931425.

It can be written as a sum of positive squares in only one way, i.e., 522396736 + 1742400 = 22856^2 + 1320^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (524139131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2047291 + ... + 2047546.

Almost surely, 2^524139136 is an apocalyptic number.

It is an amenable number.

524139136 is a deficient number, since it is larger than the sum of its proper divisors (520044554).

524139136 is an equidigital number, since it uses as much as digits as its factorization.

524139136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094851 (or 4094839 counting only the distinct ones).

The product of its digits is 19440, while the sum is 34.

The square root of 524139136 is about 22894.0851749966. The cubic root of 524139136 is about 806.2731476158.

The spelling of 524139136 in words is "five hundred twenty-four million, one hundred thirty-nine thousand, one hundred thirty-six".