12497157 has 12 divisors (see below), whose sum is σ = 18539820. Its totient is φ = 8106048.

The previous prime is 12497141. The next prime is 12497161. The reversal of 12497157 is 75179421.

It is a happy number.

12497157 is a `hidden beast` number, since 12 + 497 + 157 = 666.

12497157 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5239521 + 7257636 = 2289^2 + 2694^2 .

It is not a de Polignac number, because 12497157 - 2⁴ = 12497141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12497167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18432 + ... + 19097.

It is an arithmetic number, because the mean of its divisors is an integer number (1544985).

Almost surely, 2^12497157 is an apocalyptic number.

It is an amenable number.

12497157 is a deficient number, since it is larger than the sum of its proper divisors (6042663).

12497157 is a wasteful number, since it uses less digits than its factorization.

12497157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37572 (or 37569 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12497157 is about 3535.1318221532. The cubic root of 12497157 is about 232.0618456305.

The spelling of 12497157 in words is "twelve million, four hundred ninety-seven thousand, one hundred fifty-seven".