56612890 has 32 divisors (see below), whose sum is σ = 112596480. Its totient is φ = 20385024.

The previous prime is 56612869. The next prime is 56612891. The reversal of 56612890 is 9821665.

It is not an unprimeable number, because it can be changed into a prime (56612891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3330 + ... + 11149.

It is an arithmetic number, because the mean of its divisors is an integer number (3518640).

Almost surely, 2^56612890 is an apocalyptic number.

56612890 is a deficient number, since it is larger than the sum of its proper divisors (55983590).

56612890 is a wasteful number, since it uses less digits than its factorization.

56612890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 56612890 is about 7524.1537730166. The cubic root of 56612890 is about 383.9769092380.

It can be divided in two parts, 566 and 12890, that added together give a square (13456 = 116²).

The spelling of 56612890 in words is "fifty-six million, six hundred twelve thousand, eight hundred ninety".