157331429 has 2 divisors, whose sum is σ = 157331430. Its totient is φ = 157331428.

The previous prime is 157331411. The next prime is 157331443. The reversal of 157331429 is 924133751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154008100 + 3323329 = 12410^2 + 1823^2 .

It is an emirp because it is prime and its reverse (924133751) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157331429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157331129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78665714 + 78665715.

It is an arithmetic number, because the mean of its divisors is an integer number (78665715).

Almost surely, 2^157331429 is an apocalyptic number.

It is an amenable number.

157331429 is a deficient number, since it is larger than the sum of its proper divisors (1).

157331429 is an equidigital number, since it uses as much as digits as its factorization.

157331429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 157331429 is about 12543.1825706238. The cubic root of 157331429 is about 539.8484130980.

The spelling of 157331429 in words is "one hundred fifty-seven million, three hundred thirty-one thousand, four hundred twenty-nine".