56037749 has 2 divisors, whose sum is σ = 56037750. Its totient is φ = 56037748.

The previous prime is 56037733. The next prime is 56037769. The reversal of 56037749 is 94773065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53027524 + 3010225 = 7282^2 + 1735^2 .

It is a cyclic number.

It is not a de Polignac number, because 56037749 - 2⁴ = 56037733 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56037769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28018874 + 28018875.

It is an arithmetic number, because the mean of its divisors is an integer number (28018875).

Almost surely, 2^56037749 is an apocalyptic number.

It is an amenable number.

56037749 is a deficient number, since it is larger than the sum of its proper divisors (1).

56037749 is an equidigital number, since it uses as much as digits as its factorization.

56037749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 56037749 is about 7485.8365597974. The cubic root of 56037749 is about 382.6721830065.

The spelling of 56037749 in words is "fifty-six million, thirty-seven thousand, seven hundred forty-nine".