56774009 has 2 divisors, whose sum is σ = 56774010. Its totient is φ = 56774008.

The previous prime is 56773993. The next prime is 56774017. The reversal of 56774009 is 90047765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51265600 + 5508409 = 7160^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 56774009 - 2⁴ = 56773993 is a prime.

It is not a weakly prime, because it can be changed into another prime (56774059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28387004 + 28387005.

It is an arithmetic number, because the mean of its divisors is an integer number (28387005).

Almost surely, 2^56774009 is an apocalyptic number.

It is an amenable number.

56774009 is a deficient number, since it is larger than the sum of its proper divisors (1).

56774009 is an equidigital number, since it uses as much as digits as its factorization.

56774009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 56774009 is about 7534.8529514517. The cubic root of 56774009 is about 384.3408274112.

The spelling of 56774009 in words is "fifty-six million, seven hundred seventy-four thousand, nine".