56771477 has 4 divisors (see below), whose sum is σ = 64881696. Its totient is φ = 48661260.

The previous prime is 56771459. The next prime is 56771479. The reversal of 56771477 is 77417765.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77417765 = 5 ⋅15483553.

It is a cyclic number.

It is not a de Polignac number, because 56771477 - 2²⁴ = 39994261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56771479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055099 + ... + 4055112.

It is an arithmetic number, because the mean of its divisors is an integer number (16220424).

Almost surely, 2^56771477 is an apocalyptic number.

It is an amenable number.

56771477 is a deficient number, since it is larger than the sum of its proper divisors (8110219).

56771477 is an equidigital number, since it uses as much as digits as its factorization.

56771477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110218.

The product of its digits is 288120, while the sum is 44.

The square root of 56771477 is about 7534.6849303737. The cubic root of 56771477 is about 384.3351137319.

The spelling of 56771477 in words is "fifty-six million, seven hundred seventy-one thousand, four hundred seventy-seven".