12157527 has 4 divisors (see below), whose sum is σ = 16210040. Its totient is φ = 8105016.

The previous prime is 12157469. The next prime is 12157553. The reversal of 12157527 is 72575121.

12157527 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72575121 = 3 ⋅24191707.

It is not a de Polignac number, because 12157527 - 2¹⁸ = 11895383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12157494 and 12157503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026252 + ... + 2026257.

It is an arithmetic number, because the mean of its divisors is an integer number (4052510).

Almost surely, 2^12157527 is an apocalyptic number.

12157527 is a deficient number, since it is larger than the sum of its proper divisors (4052513).

12157527 is an equidigital number, since it uses as much as digits as its factorization.

12157527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052512.

The product of its digits is 4900, while the sum is 30.

The square root of 12157527 is about 3486.7645461086. The cubic root of 12157527 is about 229.9402932605.

The spelling of 12157527 in words is "twelve million, one hundred fifty-seven thousand, five hundred twenty-seven".