521272988 has 6 divisors (see below), whose sum is σ = 912227736. Its totient is φ = 260636492.

The previous prime is 521272987. The next prime is 521272991. The reversal of 521272988 is 889272125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521272987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65159120 + ... + 65159127.

It is an arithmetic number, because the mean of its divisors is an integer number (152037956).

Almost surely, 2^521272988 is an apocalyptic number.

It is an amenable number.

521272988 is a deficient number, since it is larger than the sum of its proper divisors (390954748).

521272988 is a wasteful number, since it uses less digits than its factorization.

521272988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130318251 (or 130318249 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 521272988 is about 22831.4035486214. The cubic root of 521272988 is about 804.8008138536.

The spelling of 521272988 in words is "five hundred twenty-one million, two hundred seventy-two thousand, nine hundred eighty-eight".