56868157 has 2 divisors, whose sum is σ = 56868158. Its totient is φ = 56868156.

The previous prime is 56868143. The next prime is 56868169. The reversal of 56868157 is 75186865.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53158681 + 3709476 = 7291^2 + 1926^2 .

It is a cyclic number.

It is not a de Polignac number, because 56868157 - 2¹⁹ = 56343869 is a prime.

It is a super-5 number, since 5×56868157⁵ (a number of 40 digits) contains 55555 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56868127) 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, 28434078 + 28434079.

It is an arithmetic number, because the mean of its divisors is an integer number (28434079).

Almost surely, 2^56868157 is an apocalyptic number.

It is an amenable number.

56868157 is a deficient number, since it is larger than the sum of its proper divisors (1).

56868157 is an equidigital number, since it uses as much as digits as its factorization.

56868157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 56868157 is about 7541.0978643696. The cubic root of 56868157 is about 384.5531601172.

The spelling of 56868157 in words is "fifty-six million, eight hundred sixty-eight thousand, one hundred fifty-seven".