12603157 has 4 divisors (see below), whose sum is σ = 14403616. Its totient is φ = 10802700.

The previous prime is 12603133. The next prime is 12603161. The reversal of 12603157 is 75130621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12603157 - 2²³ = 4214549 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 (12603127) 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, 900219 + ... + 900232.

It is an arithmetic number, because the mean of its divisors is an integer number (3600904).

Almost surely, 2^12603157 is an apocalyptic number.

It is an amenable number.

12603157 is a deficient number, since it is larger than the sum of its proper divisors (1800459).

12603157 is an equidigital number, since it uses as much as digits as its factorization.

12603157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800458.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12603157 is about 3550.0925340053. The cubic root of 12603157 is about 232.7161100039.

Adding to 12603157 its reverse (75130621), we get a palindrome (87733778).

The spelling of 12603157 in words is "twelve million, six hundred three thousand, one hundred fifty-seven".