521454052 has 24 divisors (see below), whose sum is σ = 1050418880. Its totient is φ = 221870880.

The previous prime is 521454041. The next prime is 521454067. The reversal of 521454052 is 250454125.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 521454052.

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, 63099 + ... + 70882.

Almost surely, 2^521454052 is an apocalyptic number.

It is an amenable number.

521454052 is an abundant number, since it is smaller than the sum of its proper divisors (528964828).

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

521454052 is a wasteful number, since it uses less digits than its factorization.

521454052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134131 (or 134129 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 521454052 is about 22835.3684445861. The cubic root of 521454052 is about 804.8939854989.

The spelling of 521454052 in words is "five hundred twenty-one million, four hundred fifty-four thousand, fifty-two".