521104332 has 48 divisors (see below), whose sum is σ = 1471357440. Its totient is φ = 140128512.

The previous prime is 521104319. The next prime is 521104351. The reversal of 521104332 is 233401125.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 521104299 and 521104308.

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, 181032 + ... + 183887.

It is an arithmetic number, because the mean of its divisors is an integer number (30653280).

Almost surely, 2^521104332 is an apocalyptic number.

It is an amenable number.

521104332 is an abundant number, since it is smaller than the sum of its proper divisors (950253108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521104332 is a wasteful number, since it uses less digits than its factorization.

521104332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364950 (or 364948 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 521104332 is about 22827.7097405763. The cubic root of 521104332 is about 804.7140076883.

Adding to 521104332 its reverse (233401125), we get a palindrome (754505457).

The spelling of 521104332 in words is "five hundred twenty-one million, one hundred four thousand, three hundred thirty-two".