157655791 has 2 divisors, whose sum is σ = 157655792. Its totient is φ = 157655790.

The previous prime is 157655753. The next prime is 157655821. The reversal of 157655791 is 197556751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157655791 - 2²⁵ = 124101359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157655591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78827895 + 78827896.

It is an arithmetic number, because the mean of its divisors is an integer number (78827896).

Almost surely, 2^157655791 is an apocalyptic number.

157655791 is a deficient number, since it is larger than the sum of its proper divisors (1).

157655791 is an equidigital number, since it uses as much as digits as its factorization.

157655791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 330750, while the sum is 46.

The square root of 157655791 is about 12556.1057259008. The cubic root of 157655791 is about 540.2191508751.

The spelling of 157655791 in words is "one hundred fifty-seven million, six hundred fifty-five thousand, seven hundred ninety-one".