56772745 has 4 divisors (see below), whose sum is σ = 68127300. Its totient is φ = 45418192.

The previous prime is 56772733. The next prime is 56772769. The reversal of 56772745 is 54727765.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54727765 = 5 ⋅10945553.

It can be written as a sum of positive squares in 2 ways, for example, as 38291344 + 18481401 = 6188^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 56772745 - 2¹³ = 56764553 is a prime.

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, 5677270 + ... + 5677279.

It is an arithmetic number, because the mean of its divisors is an integer number (17031825).

Almost surely, 2^56772745 is an apocalyptic number.

It is an amenable number.

56772745 is a deficient number, since it is larger than the sum of its proper divisors (11354555).

56772745 is a wasteful number, since it uses less digits than its factorization.

56772745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354554.

The product of its digits is 411600, while the sum is 43.

The square root of 56772745 is about 7534.7690740991. The cubic root of 56772745 is about 384.3379751060.

The spelling of 56772745 in words is "fifty-six million, seven hundred seventy-two thousand, seven hundred forty-five".