56164237 has 2 divisors, whose sum is σ = 56164238. Its totient is φ = 56164236.

The previous prime is 56164217. The next prime is 56164253. The reversal of 56164237 is 73246165.

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., 52577001 + 3587236 = 7251^2 + 1894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56164237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56164217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28082118 + 28082119.

It is an arithmetic number, because the mean of its divisors is an integer number (28082119).

Almost surely, 2^56164237 is an apocalyptic number.

It is an amenable number.

56164237 is a deficient number, since it is larger than the sum of its proper divisors (1).

56164237 is an equidigital number, since it uses as much as digits as its factorization.

56164237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 56164237 is about 7494.2802856579. The cubic root of 56164237 is about 382.9598882701.

The spelling of 56164237 in words is "fifty-six million, one hundred sixty-four thousand, two hundred thirty-seven".