13251945 has 32 divisors (see below), whose sum is σ = 24641280. Its totient is φ = 5955840.

The previous prime is 13251941. The next prime is 13251947. The reversal of 13251945 is 54915231.

13251945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13251945 - 2² = 13251941 is a prime.

It is a super-2 number, since 2×13251945² = 351228092566050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13251941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5371 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (770040).

Almost surely, 2^13251945 is an apocalyptic number.

13251945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13251945 is a deficient number, since it is larger than the sum of its proper divisors (11389335).

13251945 is a wasteful number, since it uses less digits than its factorization.

13251945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145.

The product of its digits is 5400, while the sum is 30.

The square root of 13251945 is about 3640.3221011334. The cubic root of 13251945 is about 236.6427525485.

It can be divided in two parts, 13251 and 945, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 13251945 in words is "thirteen million, two hundred fifty-one thousand, nine hundred forty-five".