56377549 has 2 divisors, whose sum is σ = 56377550. Its totient is φ = 56377548.

The previous prime is 56377547. The next prime is 56377567. The reversal of 56377549 is 94577365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56355049 + 22500 = 7507^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 56377549 - 2¹ = 56377547 is a prime.

Together with 56377547, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 56377499 and 56377508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56377547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28188774 + 28188775.

It is an arithmetic number, because the mean of its divisors is an integer number (28188775).

Almost surely, 2^56377549 is an apocalyptic number.

It is an amenable number.

56377549 is a deficient number, since it is larger than the sum of its proper divisors (1).

56377549 is an equidigital number, since it uses as much as digits as its factorization.

56377549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 46.

The square root of 56377549 is about 7508.4984517545. The cubic root of 56377549 is about 383.4441035059. Note that the first 3 decimals are identical.

The spelling of 56377549 in words is "fifty-six million, three hundred seventy-seven thousand, five hundred forty-nine".