521764048 has 20 divisors (see below), whose sum is σ = 1088681188. Its totient is φ = 240814080.

The previous prime is 521764043. The next prime is 521764079. The reversal of 521764048 is 840467125.

It can be written as a sum of positive squares in 2 ways, for example, as 41628304 + 480135744 = 6452^2 + 21912^2 .

It is a junction number, because it is equal to n+sod(n) for n = 521763998 and 521764016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521764043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254033 + ... + 1254448.

Almost surely, 2^521764048 is an apocalyptic number.

It is an amenable number.

521764048 is an abundant number, since it is smaller than the sum of its proper divisors (566917140).

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

521764048 is a wasteful number, since it uses less digits than its factorization.

521764048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508502 (or 2508496 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 521764048 is about 22842.1550647044. The cubic root of 521764048 is about 805.0534527216.

The spelling of 521764048 in words is "five hundred twenty-one million, seven hundred sixty-four thousand, forty-eight".