56773649 has 2 divisors, whose sum is σ = 56773650. Its totient is φ = 56773648.

The previous prime is 56773621. The next prime is 56773667. The reversal of 56773649 is 94637765.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 3775249 = 7280^2 + 1943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56773649 is a prime.

It is not a weakly prime, because it can be changed into another prime (56773669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28386824 + 28386825.

It is an arithmetic number, because the mean of its divisors is an integer number (28386825).

Almost surely, 2^56773649 is an apocalyptic number.

It is an amenable number.

56773649 is a deficient number, since it is larger than the sum of its proper divisors (1).

56773649 is an equidigital number, since it uses as much as digits as its factorization.

56773649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 47.

The square root of 56773649 is about 7534.8290624274. The cubic root of 56773649 is about 384.3400150501.

The spelling of 56773649 in words is "fifty-six million, seven hundred seventy-three thousand, six hundred forty-nine".