13312550 has 24 divisors (see below), whose sum is σ = 24915072. Its totient is φ = 5292000.

The previous prime is 13312529. The next prime is 13312553. The reversal of 13312550 is 5521331.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312553) 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, 8315 + ... + 9785.

It is an arithmetic number, because the mean of its divisors is an integer number (1038128).

Almost surely, 2^13312550 is an apocalyptic number.

13312550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13312550 is a deficient number, since it is larger than the sum of its proper divisors (11602522).

13312550 is a wasteful number, since it uses less digits than its factorization.

13312550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13312550 is about 3648.6367317123. The cubic root of 13312550 is about 237.0029493957.

Adding to 13312550 its reverse (5521331), we get a palindrome (18833881).

The spelling of 13312550 in words is "thirteen million, three hundred twelve thousand, five hundred fifty".