561551052 has 48 divisors (see below), whose sum is σ = 1324450400. Its totient is φ = 185172480.

The previous prime is 561551033. The next prime is 561551069. The reversal of 561551052 is 250155165.

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, 496824 + ... + 497952.

Almost surely, 2^561551052 is an apocalyptic number.

It is an amenable number.

561551052 is an abundant number, since it is smaller than the sum of its proper divisors (762899348).

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

561551052 is a wasteful number, since it uses less digits than its factorization.

561551052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1546 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 561551052 is about 23697.0684262843. The cubic root of 561551052 is about 825.0173498647.

The spelling of 561551052 in words is "five hundred sixty-one million, five hundred fifty-one thousand, fifty-two".