56749529 has 2 divisors, whose sum is σ = 56749530. Its totient is φ = 56749528.

The previous prime is 56749513. The next prime is 56749531. The reversal of 56749529 is 92594765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 123904 = 7525^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 56749529 - 2⁴ = 56749513 is a prime.

Together with 56749531, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (56749229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28374764 + 28374765.

It is an arithmetic number, because the mean of its divisors is an integer number (28374765).

Almost surely, 2^56749529 is an apocalyptic number.

It is an amenable number.

56749529 is a deficient number, since it is larger than the sum of its proper divisors (1).

56749529 is an equidigital number, since it uses as much as digits as its factorization.

56749529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 56749529 is about 7533.2283252268. The cubic root of 56749529 is about 384.2855790313.

The spelling of 56749529 in words is "fifty-six million, seven hundred forty-nine thousand, five hundred twenty-nine".