13375121 has 4 divisors (see below), whose sum is σ = 13956672. Its totient is φ = 12793572.

The previous prime is 13375111. The next prime is 13375129. The reversal of 13375121 is 12157331.

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 13375121 - 2⁶ = 13375057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 581527 = 13375121 / (1 + 3 + 3 + 7 + 5 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13375129) 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, 290741 + ... + 290786.

It is an arithmetic number, because the mean of its divisors is an integer number (3489168).

Almost surely, 2^13375121 is an apocalyptic number.

It is an amenable number.

13375121 is a deficient number, since it is larger than the sum of its proper divisors (581551).

13375121 is an equidigital number, since it uses as much as digits as its factorization.

13375121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581550.

The product of its digits is 630, while the sum is 23.

The square root of 13375121 is about 3657.2012523240. The cubic root of 13375121 is about 237.3736857403.

The spelling of 13375121 in words is "thirteen million, three hundred seventy-five thousand, one hundred twenty-one".