561156376 has 24 divisors (see below), whose sum is σ = 1156517460. Its totient is φ = 255070640.

The previous prime is 561156371. The next prime is 561156377. The reversal of 561156376 is 673651165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561156371) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 288886 + ... + 290821.

Almost surely, 2^561156376 is an apocalyptic number.

It is an amenable number.

561156376 is an abundant number, since it is smaller than the sum of its proper divisors (595361084).

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

561156376 is a wasteful number, since it uses less digits than its factorization.

561156376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579735 (or 579720 counting only the distinct ones).

The product of its digits is 113400, while the sum is 40.

The square root of 561156376 is about 23688.7394345921. The cubic root of 561156376 is about 824.8240217245.

The spelling of 561156376 in words is "five hundred sixty-one million, one hundred fifty-six thousand, three hundred seventy-six".