56776147 has 2 divisors, whose sum is σ = 56776148. Its totient is φ = 56776146.

The previous prime is 56776133. The next prime is 56776157. The reversal of 56776147 is 74167765.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56776147 - 2¹¹ = 56774099 is a prime.

It is not a weakly prime, because it can be changed into another prime (56776117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388073 + 28388074.

It is an arithmetic number, because the mean of its divisors is an integer number (28388074).

Almost surely, 2^56776147 is an apocalyptic number.

56776147 is a deficient number, since it is larger than the sum of its proper divisors (1).

56776147 is an equidigital number, since it uses as much as digits as its factorization.

56776147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The square root of 56776147 is about 7534.9948241522. The cubic root of 56776147 is about 384.3456518628.

The spelling of 56776147 in words is "fifty-six million, seven hundred seventy-six thousand, one hundred forty-seven".