56477081 has 2 divisors, whose sum is σ = 56477082. Its totient is φ = 56477080.

The previous prime is 56477051. The next prime is 56477087. The reversal of 56477081 is 18077465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 21855625 = 5884^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 56477081 - 2¹⁴ = 56460697 is a prime.

It is a super-2 number, since 2×56477081² = 6379321356561122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56477087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28238540 + 28238541.

It is an arithmetic number, because the mean of its divisors is an integer number (28238541).

Almost surely, 2^56477081 is an apocalyptic number.

It is an amenable number.

56477081 is a deficient number, since it is larger than the sum of its proper divisors (1).

56477081 is an equidigital number, since it uses as much as digits as its factorization.

56477081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 56477081 is about 7515.1234853461. The cubic root of 56477081 is about 383.6696218886.

The spelling of 56477081 in words is "fifty-six million, four hundred seventy-seven thousand, eighty-one".