13401951 has 16 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 8480160.

The previous prime is 13401937. The next prime is 13401989. The reversal of 13401951 is 15910431.

It is not a de Polignac number, because 13401951 - 2⁵ = 13401919 is a prime.

It is a super-2 number, since 2×13401951² = 359224581212802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13401931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3570 + ... + 6288.

It is an arithmetic number, because the mean of its divisors is an integer number (1175040).

Almost surely, 2^13401951 is an apocalyptic number.

13401951 is a deficient number, since it is larger than the sum of its proper divisors (5398689).

13401951 is a wasteful number, since it uses less digits than its factorization.

13401951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 13401951 is about 3660.8675201378. The cubic root of 13401951 is about 237.5323006853.

The spelling of 13401951 in words is "thirteen million, four hundred one thousand, nine hundred fifty-one".