56777443 has 2 divisors, whose sum is σ = 56777444. Its totient is φ = 56777442.

The previous prime is 56777437. The next prime is 56777471. The reversal of 56777443 is 34477765.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56777443 - 2²¹ = 54680291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56777443.

It is not a weakly prime, because it can be changed into another prime (56777143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28388721 + 28388722.

It is an arithmetic number, because the mean of its divisors is an integer number (28388722).

Almost surely, 2^56777443 is an apocalyptic number.

56777443 is a deficient number, since it is larger than the sum of its proper divisors (1).

56777443 is an equidigital number, since it uses as much as digits as its factorization.

56777443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 493920, while the sum is 43.

The square root of 56777443 is about 7535.0808223933. The cubic root of 56777443 is about 384.3485762610.

The spelling of 56777443 in words is "fifty-six million, seven hundred seventy-seven thousand, four hundred forty-three".