56057905 has 8 divisors (see below), whose sum is σ = 67419432. Its totient is φ = 44746368.

The previous prime is 56057873. The next prime is 56057917. The reversal of 56057905 is 50975065.

It can be written as a sum of positive squares in 4 ways, for example, as 2241009 + 53816896 = 1497^2 + 7336^2 .

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 56057905 - 2⁵ = 56057873 is a prime.

It is a Duffinian number.

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, 9982 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (8427429).

Almost surely, 2^56057905 is an apocalyptic number.

It is an amenable number.

56057905 is a deficient number, since it is larger than the sum of its proper divisors (11361527).

56057905 is a wasteful number, since it uses less digits than its factorization.

56057905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24995.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 56057905 is about 7487.1827144795. The cubic root of 56057905 is about 382.7180581298.

The spelling of 56057905 in words is "fifty-six million, fifty-seven thousand, nine hundred five".