13424251 has 4 divisors (see below), whose sum is σ = 13472992. Its totient is φ = 13375512.

The previous prime is 13424231. The next prime is 13424263. The reversal of 13424251 is 15242431.

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 13424251 - 2⁷ = 13424123 is a prime.

It is a super-2 number, since 2×13424251² = 360421029822002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13424221) 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, 23955 + ... + 24508.

It is an arithmetic number, because the mean of its divisors is an integer number (3368248).

Almost surely, 2^13424251 is an apocalyptic number.

13424251 is a deficient number, since it is larger than the sum of its proper divisors (48741).

13424251 is an equidigital number, since it uses as much as digits as its factorization.

13424251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48740.

The product of its digits is 960, while the sum is 22.

The square root of 13424251 is about 3663.9119803838. The cubic root of 13424251 is about 237.6639739289.

Adding to 13424251 its reverse (15242431), we get a palindrome (28666682).

The spelling of 13424251 in words is "thirteen million, four hundred twenty-four thousand, two hundred fifty-one".