13215552 has 56 divisors (see below), whose sum is σ = 39965376. Its totient is φ = 3775488.

The previous prime is 13215541. The next prime is 13215569. The reversal of 13215552 is 25551231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3573 + ... + 6260.

Almost surely, 2^13215552 is an apocalyptic number.

13215552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13215552 is an abundant number, since it is smaller than the sum of its proper divisors (26749824).

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

13215552 is an equidigital number, since it uses as much as digits as its factorization.

13215552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9855 (or 9845 counting only the distinct ones).

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

The square root of 13215552 is about 3635.3200684396. The cubic root of 13215552 is about 236.4259281401.

Adding to 13215552 its reverse (25551231), we get a palindrome (38766783).

The spelling of 13215552 in words is "thirteen million, two hundred fifteen thousand, five hundred fifty-two".