1255157 has 2 divisors, whose sum is σ = 1255158. Its totient is φ = 1255156.

The previous prime is 1255153. The next prime is 1255169. The reversal of 1255157 is 7515521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240996 + 14161 = 1114^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255157 - 2² = 1255153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1255153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627578 + 627579.

It is an arithmetic number, because the mean of its divisors is an integer number (627579).

2^1255157 is an apocalyptic number.

It is an amenable number.

1255157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255157 is an equidigital number, since it uses as much as digits as its factorization.

1255157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1750, while the sum is 26.

The square root of 1255157 is about 1120.3378954583. The cubic root of 1255157 is about 107.8696701759.

The spelling of 1255157 in words is "one million, two hundred fifty-five thousand, one hundred fifty-seven".