2517157 has 2 divisors, whose sum is σ = 2517158. Its totient is φ = 2517156.

The previous prime is 2517149. The next prime is 2517161. The reversal of 2517157 is 7517152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2405601 + 111556 = 1551^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 2517157 - 2³ = 2517149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2517127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258578 + 1258579.

It is an arithmetic number, because the mean of its divisors is an integer number (1258579).

2^2517157 is an apocalyptic number.

It is an amenable number.

2517157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2517157 is an equidigital number, since it uses as much as digits as its factorization.

2517157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2450, while the sum is 28.

The square root of 2517157 is about 1586.5550731065. Note that the first 3 decimals coincide. The cubic root of 2517157 is about 136.0306483695.

The spelling of 2517157 in words is "two million, five hundred seventeen thousand, one hundred fifty-seven".