13087251 has 12 divisors (see below), whose sum is σ = 19604312. Its totient is φ = 8724672.

The previous prime is 13087213. The next prime is 13087259. The reversal of 13087251 is 15278031.

13087251 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 13087251 - 2⁹ = 13086739 is a prime.

It is a super-2 number, since 2×13087251² = 342552277474002, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13087259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26686 + ... + 27171.

Almost surely, 2^13087251 is an apocalyptic number.

13087251 is a deficient number, since it is larger than the sum of its proper divisors (6517061).

13087251 is an frugal number, since it uses more digits than its factorization.

13087251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53872 (or 53860 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 13087251 is about 3617.6305781547. The cubic root of 13087251 is about 235.6583380794.

The spelling of 13087251 in words is "thirteen million, eighty-seven thousand, two hundred fifty-one".