157152731 has 2 divisors, whose sum is σ = 157152732. Its totient is φ = 157152730.

The previous prime is 157152689. The next prime is 157152739. The reversal of 157152731 is 137251751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157152731 is a prime.

It is a super-2 number, since 2×157152731² = 49393961721516722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (157152739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78576365 + 78576366.

It is an arithmetic number, because the mean of its divisors is an integer number (78576366).

Almost surely, 2^157152731 is an apocalyptic number.

157152731 is a deficient number, since it is larger than the sum of its proper divisors (1).

157152731 is an equidigital number, since it uses as much as digits as its factorization.

157152731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7350, while the sum is 32.

The square root of 157152731 is about 12536.0572350321. The cubic root of 157152731 is about 539.6439479570.

The spelling of 157152731 in words is "one hundred fifty-seven million, one hundred fifty-two thousand, seven hundred thirty-one".