56747137 has 2 divisors, whose sum is σ = 56747138. Its totient is φ = 56747136.

The previous prime is 56747123. The next prime is 56747147. The reversal of 56747137 is 73174765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51322896 + 5424241 = 7164^2 + 2329^2 .

It is a cyclic number.

It is not a de Polignac number, because 56747137 - 2¹¹ = 56745089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56747137.

It is not a weakly prime, because it can be changed into another prime (56747147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28373568 + 28373569.

It is an arithmetic number, because the mean of its divisors is an integer number (28373569).

Almost surely, 2^56747137 is an apocalyptic number.

It is an amenable number.

56747137 is a deficient number, since it is larger than the sum of its proper divisors (1).

56747137 is an equidigital number, since it uses as much as digits as its factorization.

56747137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123480, while the sum is 40.

The square root of 56747137 is about 7533.0695602789. The cubic root of 56747137 is about 384.2801797264.

The spelling of 56747137 in words is "fifty-six million, seven hundred forty-seven thousand, one hundred thirty-seven".