56017905 has 16 divisors (see below), whose sum is σ = 89968320. Its totient is φ = 29763008.

The previous prime is 56017883. The next prime is 56017921. The reversal of 56017905 is 50971065.

It is a cyclic number.

It is not a de Polignac number, because 56017905 - 2¹⁸ = 55755761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2907 + ... + 10976.

It is an arithmetic number, because the mean of its divisors is an integer number (5623020).

Almost surely, 2^56017905 is an apocalyptic number.

It is an amenable number.

56017905 is a deficient number, since it is larger than the sum of its proper divisors (33950415).

56017905 is a wasteful number, since it uses less digits than its factorization.

56017905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 56017905 is about 7484.5110060711. The cubic root of 56017905 is about 382.6270072486.

The spelling of 56017905 in words is "fifty-six million, seventeen thousand, nine hundred five".