561572 has 12 divisors (see below), whose sum is σ = 1072176. Its totient is φ = 255240.

The previous prime is 561559. The next prime is 561599. The reversal of 561572 is 275165.

It is a super-2 number, since 2×561572² = 630726222368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6338 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (89348).

2⁵⁶¹⁵⁷² is an apocalyptic number.

It is an amenable number.

561572 is a deficient number, since it is larger than the sum of its proper divisors (510604).

561572 is a wasteful number, since it uses less digits than its factorization.

561572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12778 (or 12776 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 561572 is about 749.3810779570. The cubic root of 561572 is about 82.5027608504.

The spelling of 561572 in words is "five hundred sixty-one thousand, five hundred seventy-two".