561157612 has 24 divisors (see below), whose sum is σ = 988012256. Its totient is φ = 278875008.

The previous prime is 561157603. The next prime is 561157631. The reversal of 561157612 is 216751165.

561157612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681433 + ... + 682255.

Almost surely, 2^561157612 is an apocalyptic number.

It is an amenable number.

561157612 is a deficient number, since it is larger than the sum of its proper divisors (426854644).

561157612 is a wasteful number, since it uses less digits than its factorization.

561157612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657 (or 1655 counting only the distinct ones).

The product of its digits is 12600, while the sum is 34.

The square root of 561157612 is about 23688.7655229225. The cubic root of 561157612 is about 824.8246273084.

The spelling of 561157612 in words is "five hundred sixty-one million, one hundred fifty-seven thousand, six hundred twelve".