56042905 has 8 divisors (see below), whose sum is σ = 67350600. Its totient is φ = 44768256.

The previous prime is 56042893. The next prime is 56042911. The reversal of 56042905 is 50924065.

It can be written as a sum of positive squares in 4 ways, for example, as 1814409 + 54228496 = 1347^2 + 7364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56042905 - 2¹⁵ = 56010137 is a prime.

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, 4360 + ... + 11449.

It is an arithmetic number, because the mean of its divisors is an integer number (8418825).

Almost surely, 2^56042905 is an apocalyptic number.

It is an amenable number.

56042905 is a deficient number, since it is larger than the sum of its proper divisors (11307695).

56042905 is a wasteful number, since it uses less digits than its factorization.

56042905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16523.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 56042905 is about 7486.1809355639. The cubic root of 56042905 is about 382.6839191266.

The spelling of 56042905 in words is "fifty-six million, forty-two thousand, nine hundred five".