13805451 has 64 divisors (see below), whose sum is σ = 24330240. Its totient is φ = 7650720.

The previous prime is 13805443. The next prime is 13805471. The reversal of 13805451 is 15450831.

It is not a de Polignac number, because 13805451 - 2³ = 13805443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13805401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293710 + ... + 293756.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^13805451 is an apocalyptic number.

13805451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13805451 is a deficient number, since it is larger than the sum of its proper divisors (10524789).

13805451 is a wasteful number, since it uses less digits than its factorization.

13805451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 13805451 is about 3715.5687317018. The cubic root of 13805451 is about 239.8926082030.

The spelling of 13805451 in words is "thirteen million, eight hundred five thousand, four hundred fifty-one".