13552331 has 4 divisors (see below), whose sum is σ = 14594832. Its totient is φ = 12509832.

The previous prime is 13552327. The next prime is 13552333. The reversal of 13552331 is 13325531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13552331 - 2² = 13552327 is a prime.

It is a super-2 number, since 2×13552331² = 367331351067122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13552297 and 13552306.

It is not an unprimeable number, because it can be changed into a prime (13552333) 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, 521231 + ... + 521256.

It is an arithmetic number, because the mean of its divisors is an integer number (3648708).

Almost surely, 2^13552331 is an apocalyptic number.

13552331 is a deficient number, since it is larger than the sum of its proper divisors (1042501).

13552331 is a wasteful number, since it uses less digits than its factorization.

13552331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042500.

The product of its digits is 1350, while the sum is 23.

The square root of 13552331 is about 3681.3490733697. The cubic root of 13552331 is about 238.4174288247.

Adding to 13552331 its reverse (13325531), we get a palindrome (26877862).

The spelling of 13552331 in words is "thirteen million, five hundred fifty-two thousand, three hundred thirty-one".