157144293 has 10 divisors (see below), whose sum is σ = 234746534. Its totient is φ = 104762808.

The previous prime is 157144237. The next prime is 157144313. The reversal of 157144293 is 392441751.

It can be written as a sum of positive squares in only one way, i.e., 97653924 + 59490369 = 9882^2 + 7713^2 .

It is not a de Polignac number, because 157144293 - 2⁸ = 157144037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157140293) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 969946 + ... + 970107.

Almost surely, 2^157144293 is an apocalyptic number.

It is an amenable number.

157144293 is a deficient number, since it is larger than the sum of its proper divisors (77602241).

157144293 is an equidigital number, since it uses as much as digits as its factorization.

157144293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940065 (or 1940056 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 157144293 is about 12535.7206813170. The cubic root of 157144293 is about 539.6342894184.

The spelling of 157144293 in words is "one hundred fifty-seven million, one hundred forty-four thousand, two hundred ninety-three".