56578705 has 4 divisors (see below), whose sum is σ = 67894452. Its totient is φ = 45262960.

The previous prime is 56578679. The next prime is 56578721. The reversal of 56578705 is 50787565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29942784 + 26635921 = 5472^2 + 5161^2 .

It is not a de Polignac number, because 56578705 - 2⁵ = 56578673 is a prime.

It is a super-2 number, since 2×56578705² = 6402299718954050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5657866 + ... + 5657875.

It is an arithmetic number, because the mean of its divisors is an integer number (16973613).

Almost surely, 2^56578705 is an apocalyptic number.

It is an amenable number.

56578705 is a deficient number, since it is larger than the sum of its proper divisors (11315747).

56578705 is a wasteful number, since it uses less digits than its factorization.

56578705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11315746.

The product of its (nonzero) digits is 294000, while the sum is 43.

The square root of 56578705 is about 7521.8817459463. The cubic root of 56578705 is about 383.8996070925.

The spelling of 56578705 in words is "fifty-six million, five hundred seventy-eight thousand, seven hundred five".