13621552 has 20 divisors (see below), whose sum is σ = 30162256. Its totient is φ = 5837760.

The previous prime is 13621549. The next prime is 13621577. The reversal of 13621552 is 25512631.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60699 + ... + 60922.

Almost surely, 2^13621552 is an apocalyptic number.

It is an amenable number.

13621552 is an abundant number, since it is smaller than the sum of its proper divisors (16540704).

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

13621552 is a wasteful number, since it uses less digits than its factorization.

13621552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121636 (or 121630 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 13621552 is about 3690.7386794516. The cubic root of 13621552 is about 238.8226598289.

The spelling of 13621552 in words is "thirteen million, six hundred twenty-one thousand, five hundred fifty-two".