561772 has 6 divisors (see below), whose sum is σ = 983108. Its totient is φ = 280884.

The previous prime is 561767. The next prime is 561787. The reversal of 561772 is 277165.

It is a self number, because there is not a number n which added to its sum of digits gives 561772.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70218 + ... + 70225.

2⁵⁶¹⁷⁷² is an apocalyptic number.

It is an amenable number.

561772 is a deficient number, since it is larger than the sum of its proper divisors (421336).

561772 is a wasteful number, since it uses less digits than its factorization.

561772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140447 (or 140445 counting only the distinct ones).

The product of its digits is 2940, while the sum is 28.

The square root of 561772 is about 749.5145095327. The cubic root of 561772 is about 82.5125539512.

The spelling of 561772 in words is "five hundred sixty-one thousand, seven hundred seventy-two".