13251855 has 32 divisors (see below), whose sum is σ = 21980160. Its totient is φ = 6814080.

The previous prime is 13251853. The next prime is 13251859. The reversal of 13251855 is 55815231.

13251855 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13251855 - 2¹ = 13251853 is a prime.

It is a super-2 number, since 2×13251855² = 351223321882050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13251853) 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, 62700 + ... + 62910.

It is an arithmetic number, because the mean of its divisors is an integer number (686880).

Almost surely, 2^13251855 is an apocalyptic number.

13251855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13251855 is a deficient number, since it is larger than the sum of its proper divisors (8728305).

13251855 is a wasteful number, since it uses less digits than its factorization.

13251855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 6000, while the sum is 30.

The square root of 13251855 is about 3640.3097395689. The cubic root of 13251855 is about 236.6422168310.

The spelling of 13251855 in words is "thirteen million, two hundred fifty-one thousand, eight hundred fifty-five".