157269257 has 2 divisors, whose sum is σ = 157269258. Its totient is φ = 157269256.

The previous prime is 157269253. The next prime is 157269323. The reversal of 157269257 is 752962751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138744841 + 18524416 = 11779^2 + 4304^2 .

It is a cyclic number.

It is not a de Polignac number, because 157269257 - 2² = 157269253 is a prime.

It is not a weakly prime, because it can be changed into another prime (157269253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78634628 + 78634629.

It is an arithmetic number, because the mean of its divisors is an integer number (78634629).

Almost surely, 2^157269257 is an apocalyptic number.

It is an amenable number.

157269257 is a deficient number, since it is larger than the sum of its proper divisors (1).

157269257 is an equidigital number, since it uses as much as digits as its factorization.

157269257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264600, while the sum is 44.

The square root of 157269257 is about 12540.7040073514. The cubic root of 157269257 is about 539.7772938526. Note that the first 3 decimals are identical.

The spelling of 157269257 in words is "one hundred fifty-seven million, two hundred sixty-nine thousand, two hundred fifty-seven".