56005237 has 2 divisors, whose sum is σ = 56005238. Its totient is φ = 56005236.

The previous prime is 56005231. The next prime is 56005273. The reversal of 56005237 is 73250065.

Together with next prime (56005273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 23126481 = 5734^2 + 4809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56005237 is a prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 56005237 parts by 10583 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56005231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28002618 + 28002619.

It is an arithmetic number, because the mean of its divisors is an integer number (28002619).

Almost surely, 2^56005237 is an apocalyptic number.

It is an amenable number.

56005237 is a deficient number, since it is larger than the sum of its proper divisors (1).

56005237 is an equidigital number, since it uses as much as digits as its factorization.

56005237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 56005237 is about 7483.6646771485. The cubic root of 56005237 is about 382.5981623977.

The spelling of 56005237 in words is "fifty-six million, five thousand, two hundred thirty-seven".