2125157 has 2 divisors, whose sum is σ = 2125158. Its totient is φ = 2125156.

The previous prime is 2125147. The next prime is 2125163. The reversal of 2125157 is 7515212.

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., 1985281 + 139876 = 1409^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125157 - 2¹⁴ = 2108773 is a prime.

It is a Chen prime.

It is equal to p₁₅₇₅₃₂ and since 2125157 and 157532 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062578 + 1062579.

It is an arithmetic number, because the mean of its divisors is an integer number (1062579).

2^2125157 is an apocalyptic number.

It is an amenable number.

2125157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125157 is an equidigital number, since it uses as much as digits as its factorization.

2125157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 700, while the sum is 23.

The square root of 2125157 is about 1457.7918232724. The cubic root of 2125157 is about 128.5672456605.

The spelling of 2125157 in words is "two million, one hundred twenty-five thousand, one hundred fifty-seven".