521426476 has 6 divisors (see below), whose sum is σ = 912496340. Its totient is φ = 260713236.

The previous prime is 521426453. The next prime is 521426509. The reversal of 521426476 is 674624125.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65178306 + ... + 65178313.

Almost surely, 2^521426476 is an apocalyptic number.

It is an amenable number.

521426476 is a deficient number, since it is larger than the sum of its proper divisors (391069864).

521426476 is a wasteful number, since it uses less digits than its factorization.

521426476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130356623 (or 130356621 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 521426476 is about 22834.7646364047. The cubic root of 521426476 is about 804.8797968740.

The spelling of 521426476 in words is "five hundred twenty-one million, four hundred twenty-six thousand, four hundred seventy-six".