13199522 has 18 divisors (see below), whose sum is σ = 23094747. Its totient is φ = 5641524.

The previous prime is 13199507. The next prime is 13199551. The reversal of 13199522 is 22599131.

It can be written as a sum of positive squares in only one way, i.e., 6599761 + 6599761 = 2569^2 + 2569^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=2569.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35783 + ... + 36149.

Almost surely, 2^13199522 is an apocalyptic number.

13199522 is a deficient number, since it is larger than the sum of its proper divisors (9895225).

13199522 is an frugal number, since it uses more digits than its factorization.

13199522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 376 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 13199522 is about 3633.1146417365. The cubic root of 13199522 is about 236.3302973508.

Multiplying 13199522 by its sum of digits (32), we get a square (422384704 = 20552²).

The spelling of 13199522 in words is "thirteen million, one hundred ninety-nine thousand, five hundred twenty-two".