561419272 has 8 divisors (see below), whose sum is σ = 1052661150. Its totient is φ = 280709632.

The previous prime is 561419249. The next prime is 561419291. The reversal of 561419272 is 272914165.

It can be written as a sum of positive squares in only one way, i.e., 300467556 + 260951716 = 17334^2 + 16154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35088697 + ... + 35088712.

Almost surely, 2^561419272 is an apocalyptic number.

It is an amenable number.

561419272 is a deficient number, since it is larger than the sum of its proper divisors (491241878).

561419272 is a wasteful number, since it uses less digits than its factorization.

561419272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70177415 (or 70177411 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 561419272 is about 23694.2877504263. The cubic root of 561419272 is about 824.9528088097.

The spelling of 561419272 in words is "five hundred sixty-one million, four hundred nineteen thousand, two hundred seventy-two".