157255297 has 2 divisors, whose sum is σ = 157255298. Its totient is φ = 157255296.

The previous prime is 157255277. The next prime is 157255303. The reversal of 157255297 is 792552751.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131813361 + 25441936 = 11481^2 + 5044^2 .

It is a cyclic number.

It is not a de Polignac number, because 157255297 - 2⁷ = 157255169 is a prime.

It is not a weakly prime, because it can be changed into another prime (157255277) 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, 78627648 + 78627649.

It is an arithmetic number, because the mean of its divisors is an integer number (78627649).

Almost surely, 2^157255297 is an apocalyptic number.

It is an amenable number.

157255297 is a deficient number, since it is larger than the sum of its proper divisors (1).

157255297 is an equidigital number, since it uses as much as digits as its factorization.

157255297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 220500, while the sum is 43.

The square root of 157255297 is about 12540.1474074271. The cubic root of 157255297 is about 539.7613222759.

The spelling of 157255297 in words is "one hundred fifty-seven million, two hundred fifty-five thousand, two hundred ninety-seven".