521773132 has 12 divisors (see below), whose sum is σ = 932531040. Its totient is φ = 255335696.

The previous prime is 521773127. The next prime is 521773157. The reversal of 521773132 is 231377125.

It is a junction number, because it is equal to n+sod(n) for n = 521773094 and 521773103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1387507 + ... + 1387882.

It is an arithmetic number, because the mean of its divisors is an integer number (77710920).

Almost surely, 2^521773132 is an apocalyptic number.

It is an amenable number.

521773132 is a deficient number, since it is larger than the sum of its proper divisors (410757908).

521773132 is a wasteful number, since it uses less digits than its factorization.

521773132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775440 (or 2775438 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 521773132 is about 22842.3539067234. The cubic root of 521773132 is about 805.0581247332.

The spelling of 521773132 in words is "five hundred twenty-one million, seven hundred seventy-three thousand, one hundred thirty-two".