13157603 has 4 divisors (see below), whose sum is σ = 13437600. Its totient is φ = 12877608.

The previous prime is 13157567. The next prime is 13157611. The reversal of 13157603 is 30675131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13157603 - 2⁶ = 13157539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13157663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139928 + ... + 140021.

It is an arithmetic number, because the mean of its divisors is an integer number (3359400).

Almost surely, 2^13157603 is an apocalyptic number.

13157603 is a deficient number, since it is larger than the sum of its proper divisors (279997).

13157603 is an equidigital number, since it uses as much as digits as its factorization.

13157603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279996.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 13157603 is about 3627.3410371786. The cubic root of 13157603 is about 236.0798530411.

The spelling of 13157603 in words is "thirteen million, one hundred fifty-seven thousand, six hundred three".