13515252 has 24 divisors (see below), whose sum is σ = 31817856. Its totient is φ = 4464768.

The previous prime is 13515233. The next prime is 13515253. The reversal of 13515252 is 25251531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13515253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3628 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (1325744).

Almost surely, 2^13515252 is an apocalyptic number.

13515252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13515252 is an abundant number, since it is smaller than the sum of its proper divisors (18302604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13515252 is a wasteful number, since it uses less digits than its factorization.

13515252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087 (or 10085 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 13515252 is about 3676.3095625913. The cubic root of 13515252 is about 238.1997945688.

Adding to 13515252 its reverse (25251531), we get a palindrome (38766783).

The spelling of 13515252 in words is "thirteen million, five hundred fifteen thousand, two hundred fifty-two".