254157697 has 2 divisors, whose sum is σ = 254157698. Its totient is φ = 254157696.

The previous prime is 254157689. The next prime is 254157719. The reversal of 254157697 is 796751452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253956096 + 201601 = 15936^2 + 449^2 .

It is a cyclic number.

It is not a de Polignac number, because 254157697 - 2³ = 254157689 is a prime.

It is a super-2 number, since 2×254157697² = 129192269888687618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (254157637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127078848 + 127078849.

It is an arithmetic number, because the mean of its divisors is an integer number (127078849).

Almost surely, 2^254157697 is an apocalyptic number.

It is an amenable number.

254157697 is a deficient number, since it is larger than the sum of its proper divisors (1).

254157697 is an equidigital number, since it uses as much as digits as its factorization.

254157697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 46.

The square root of 254157697 is about 15942.3240777498. The cubic root of 254157697 is about 633.4335888996.

The spelling of 254157697 in words is "two hundred fifty-four million, one hundred fifty-seven thousand, six hundred ninety-seven".