521053136 has 30 divisors (see below), whose sum is σ = 1019258982. Its totient is φ = 258042240.

The previous prime is 521053073. The next prime is 521053153. The reversal of 521053136 is 631350125.

It can be written as a sum of positive squares in 3 ways, for example, as 115433536 + 405619600 = 10744^2 + 20140^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188726 + ... + 191466.

Almost surely, 2^521053136 is an apocalyptic number.

It is an amenable number.

521053136 is a deficient number, since it is larger than the sum of its proper divisors (498205846).

521053136 is a wasteful number, since it uses less digits than its factorization.

521053136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 521053136 is about 22826.5883565635. The cubic root of 521053136 is about 804.6876537287.

The spelling of 521053136 in words is "five hundred twenty-one million, fifty-three thousand, one hundred thirty-six".