521074532 has 24 divisors (see below), whose sum is σ = 995356992. Its totient is φ = 236714400.

The previous prime is 521074529. The next prime is 521074573. The reversal of 521074532 is 235470125.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 521074495 and 521074504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146657 + ... + 150167.

It is an arithmetic number, because the mean of its divisors is an integer number (41473208).

Almost surely, 2^521074532 is an apocalyptic number.

It is an amenable number.

521074532 is a deficient number, since it is larger than the sum of its proper divisors (474282460).

521074532 is a wasteful number, since it uses less digits than its factorization.

521074532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6899 (or 6897 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 521074532 is about 22827.0570157434. The cubic root of 521074532 is about 804.6986678718.

The spelling of 521074532 in words is "five hundred twenty-one million, seventy-four thousand, five hundred thirty-two".