521274590 has 32 divisors (see below), whose sum is σ = 946352160. Its totient is φ = 206728704.

The previous prime is 521274583. The next prime is 521274601. The reversal of 521274590 is 95472125.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 521274590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952697 + ... + 953243.

It is an arithmetic number, because the mean of its divisors is an integer number (29573505).

Almost surely, 2^521274590 is an apocalyptic number.

521274590 is a deficient number, since it is larger than the sum of its proper divisors (425077570).

521274590 is a wasteful number, since it uses less digits than its factorization.

521274590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 521274590 is about 22831.4386318515. The cubic root of 521274590 is about 804.8016383030.

The spelling of 521274590 in words is "five hundred twenty-one million, two hundred seventy-four thousand, five hundred ninety".