56745778 has 8 divisors (see below), whose sum is σ = 85153068. Its totient is φ = 28361424.

The previous prime is 56745713. The next prime is 56745797. The reversal of 56745778 is 87754765.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33097009 + 23648769 = 5753^2 + 4863^2 .

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

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, 3300 + ... + 11152.

Almost surely, 2^56745778 is an apocalyptic number.

56745778 is a deficient number, since it is larger than the sum of its proper divisors (28407290).

56745778 is a wasteful number, since it uses less digits than its factorization.

56745778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11468.

The product of its digits is 1646400, while the sum is 49.

The square root of 56745778 is about 7532.9793574654. The cubic root of 56745778 is about 384.2771120772.

The spelling of 56745778 in words is "fifty-six million, seven hundred forty-five thousand, seven hundred seventy-eight".