13553642 has 8 divisors (see below), whose sum is σ = 20443332. Its totient is φ = 6739200.

The previous prime is 13553633. The next prime is 13553671. The reversal of 13553642 is 24635531.

It can be written as a sum of positive squares in 2 ways, for example, as 12187081 + 1366561 = 3491^2 + 1169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13553642² = 367402422928328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18359 + ... + 19082.

Almost surely, 2^13553642 is an apocalyptic number.

13553642 is a deficient number, since it is larger than the sum of its proper divisors (6889690).

13553642 is a wasteful number, since it uses less digits than its factorization.

13553642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37624.

The product of its digits is 10800, while the sum is 29.

The square root of 13553642 is about 3681.5271287877. The cubic root of 13553642 is about 238.4251164363.

The spelling of 13553642 in words is "thirteen million, five hundred fifty-three thousand, six hundred forty-two".