13155501 has 32 divisors (see below), whose sum is σ = 19657728. Its totient is φ = 7787520.

The previous prime is 13155491. The next prime is 13155503. The reversal of 13155501 is 10555131.

It is not a de Polignac number, because 13155501 - 2⁶ = 13155437 is a prime.

It is a super-2 number, since 2×13155501² = 346134413122002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155503) 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 31 ways as a sum of consecutive naturals, for example, 83715 + ... + 83871.

It is an arithmetic number, because the mean of its divisors is an integer number (614304).

Almost surely, 2^13155501 is an apocalyptic number.

It is an amenable number.

13155501 is a deficient number, since it is larger than the sum of its proper divisors (6502227).

13155501 is a wasteful number, since it uses less digits than its factorization.

13155501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 375, while the sum is 21.

The square root of 13155501 is about 3627.0512816887. The cubic root of 13155501 is about 236.0672806832.

The spelling of 13155501 in words is "thirteen million, one hundred fifty-five thousand, five hundred one".