56996945 has 4 divisors (see below), whose sum is σ = 68396340. Its totient is φ = 45597552.

The previous prime is 56996939. The next prime is 56996957. The reversal of 56996945 is 54969965.

56996945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54969965 = 5 ⋅10993993.

It can be written as a sum of positive squares in 2 ways, for example, as 36048016 + 20948929 = 6004^2 + 4577^2 .

It is a cyclic number.

It is not a de Polignac number, because 56996945 - 2⁶ = 56996881 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5699690 + ... + 5699699.

It is an arithmetic number, because the mean of its divisors is an integer number (17099085).

Almost surely, 2^56996945 is an apocalyptic number.

It is an amenable number.

56996945 is a deficient number, since it is larger than the sum of its proper divisors (11399395).

56996945 is a wasteful number, since it uses less digits than its factorization.

56996945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11399394.

The product of its digits is 2624400, while the sum is 53.

The square root of 56996945 is about 7549.6321102422. The cubic root of 56996945 is about 384.8432374663.

The spelling of 56996945 in words is "fifty-six million, nine hundred ninety-six thousand, nine hundred forty-five".