12570157 has 8 divisors (see below), whose sum is σ = 13443192. Its totient is φ = 11712000.

The previous prime is 12570139. The next prime is 12570163. The reversal of 12570157 is 75107521.

It can be written as a sum of positive squares in 4 ways, for example, as 2368521 + 10201636 = 1539^2 + 3194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12570157 - 2¹⁵ = 12537389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12570757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944 + ... + 5377.

It is an arithmetic number, because the mean of its divisors is an integer number (1680399).

Almost surely, 2^12570157 is an apocalyptic number.

12570157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12570157 is a deficient number, since it is larger than the sum of its proper divisors (873035).

12570157 is a wasteful number, since it uses less digits than its factorization.

12570157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7439.

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

The square root of 12570157 is about 3545.4417214220. The cubic root of 12570157 is about 232.5128185016.

Adding to 12570157 its reverse (75107521), we get a palindrome (87677678).

The spelling of 12570157 in words is "twelve million, five hundred seventy thousand, one hundred fifty-seven".