157138087 has 2 divisors, whose sum is σ = 157138088. Its totient is φ = 157138086.

The previous prime is 157138081. The next prime is 157138099. The reversal of 157138087 is 780831751.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157138087 - 2²³ = 148749479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157138081) 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, 78569043 + 78569044.

It is an arithmetic number, because the mean of its divisors is an integer number (78569044).

Almost surely, 2^157138087 is an apocalyptic number.

157138087 is a deficient number, since it is larger than the sum of its proper divisors (1).

157138087 is an equidigital number, since it uses as much as digits as its factorization.

157138087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 40.

The square root of 157138087 is about 12535.4731462358. The cubic root of 157138087 is about 539.6271855132.

The spelling of 157138087 in words is "one hundred fifty-seven million, one hundred thirty-eight thousand, eighty-seven".