561972 has 12 divisors (see below), whose sum is σ = 1311296. Its totient is φ = 187320.

The previous prime is 561961. The next prime is 561973. The reversal of 561972 is 279165.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×561972³ = 532433395277406144, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561973) 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, 23404 + ... + 23427.

2⁵⁶¹⁹⁷² is an apocalyptic number.

It is an amenable number.

561972 is an abundant number, since it is smaller than the sum of its proper divisors (749324).

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

561972 is a wasteful number, since it uses less digits than its factorization.

561972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46838 (or 46836 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 561972 is about 749.6479173585. The cubic root of 561972 is about 82.5223447280.

The spelling of 561972 in words is "five hundred sixty-one thousand, nine hundred seventy-two".