13155451 has 4 divisors (see below), whose sum is σ = 13176432. Its totient is φ = 13134472.

The previous prime is 13155449. The next prime is 13155487. The reversal of 13155451 is 15455131.

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 13155451 - 2¹ = 13155449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13155421) 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, 9520 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (3294108).

Almost surely, 2^13155451 is an apocalyptic number.

13155451 is a deficient number, since it is larger than the sum of its proper divisors (20981).

13155451 is an equidigital number, since it uses as much as digits as its factorization.

13155451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20980.

The product of its digits is 1500, while the sum is 25.

The square root of 13155451 is about 3627.0443890308. The cubic root of 13155451 is about 236.0669816099.

The spelling of 13155451 in words is "thirteen million, one hundred fifty-five thousand, four hundred fifty-one".