12157253 has 4 divisors (see below), whose sum is σ = 12201420. Its totient is φ = 12113088.

The previous prime is 12157247. The next prime is 12157273. The reversal of 12157253 is 35275121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35275121 = 7 ⋅5039303.

It can be written as a sum of positive squares in 2 ways, for example, as 7219969 + 4937284 = 2687^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 12157253 - 2⁴ = 12157237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157273) 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, 21668 + ... + 22221.

It is an arithmetic number, because the mean of its divisors is an integer number (3050355).

Almost surely, 2^12157253 is an apocalyptic number.

It is an amenable number.

12157253 is a deficient number, since it is larger than the sum of its proper divisors (44167).

12157253 is an equidigital number, since it uses as much as digits as its factorization.

12157253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44166.

The product of its digits is 2100, while the sum is 26.

The square root of 12157253 is about 3486.7252544472. The cubic root of 12157253 is about 229.9385658227.

The spelling of 12157253 in words is "twelve million, one hundred fifty-seven thousand, two hundred fifty-three".