15251 has 4 divisors (see below), whose sum is σ = 15504. Its totient is φ = 15000.

The previous prime is 15241. The next prime is 15259.

15251 is nontrivially palindromic in base 10.

15251 is an esthetic number in base 12, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15251 - 2⁶ = 15187 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is not an unprimeable number, because it can be changed into a prime (15259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26 + ... + 176.

It is an arithmetic number, because the mean of its divisors is an integer number (3876).

2¹⁵²⁵¹ is an apocalyptic number.

15251 is the 101-st pentagonal number.

15251 is a deficient number, since it is larger than the sum of its proper divisors (253).

15251 is a wasteful number, since it uses less digits than its factorization.

15251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 50, while the sum is 14.

The square root of 15251 is about 123.4949391676. The cubic root of 15251 is about 24.7989203484.

The spelling of 15251 in words is "fifteen thousand, two hundred fifty-one".