157378831 has 2 divisors, whose sum is σ = 157378832. Its totient is φ = 157378830.

The previous prime is 157378801. The next prime is 157378861. The reversal of 157378831 is 138873751.

It is a balanced prime because it is at equal distance from previous prime (157378801) and next prime (157378861).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157378831 is a prime.

It is a super-2 number, since 2×157378831² = 49536192893853122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157378801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78689415 + 78689416.

It is an arithmetic number, because the mean of its divisors is an integer number (78689416).

Almost surely, 2^157378831 is an apocalyptic number.

157378831 is a deficient number, since it is larger than the sum of its proper divisors (1).

157378831 is an equidigital number, since it uses as much as digits as its factorization.

157378831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 157378831 is about 12545.0719806624. The cubic root of 157378831 is about 539.9026241884.

The spelling of 157378831 in words is "one hundred fifty-seven million, three hundred seventy-eight thousand, eight hundred thirty-one".