521125036 has 6 divisors (see below), whose sum is σ = 911968820. Its totient is φ = 260562516.

The previous prime is 521124997. The next prime is 521125037. The reversal of 521125036 is 630521125.

It is a self number, because there is not a number n which added to its sum of digits gives 521125036.

It is not an unprimeable number, because it can be changed into a prime (521125037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65140626 + ... + 65140633.

Almost surely, 2^521125036 is an apocalyptic number.

It is an amenable number.

521125036 is a deficient number, since it is larger than the sum of its proper divisors (390843784).

521125036 is a wasteful number, since it uses less digits than its factorization.

521125036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130281263 (or 130281261 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 521125036 is about 22828.1632200228. The cubic root of 521125036 is about 804.7246649132.

The spelling of 521125036 in words is "five hundred twenty-one million, one hundred twenty-five thousand, thirty-six".