561621052 has 12 divisors (see below), whose sum is σ = 983193120. Its totient is φ = 280708736.

The previous prime is 561621043. The next prime is 561621089. The reversal of 561621052 is 250126165.

It is a self number, because there is not a number n which added to its sum of digits gives 561621052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12277 + ... + 35692.

It is an arithmetic number, because the mean of its divisors is an integer number (81932760).

Almost surely, 2^561621052 is an apocalyptic number.

It is an amenable number.

561621052 is a deficient number, since it is larger than the sum of its proper divisors (421572068).

561621052 is a wasteful number, since it uses less digits than its factorization.

561621052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50900 (or 50898 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 561621052 is about 23698.5453562028. The cubic root of 561621052 is about 825.0516292146.

The spelling of 561621052 in words is "five hundred sixty-one million, six hundred twenty-one thousand, fifty-two".