13556542 has 4 divisors (see below), whose sum is σ = 20334816. Its totient is φ = 6778270.

The previous prime is 13556537. The next prime is 13556563. The reversal of 13556542 is 24565531.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389134 + ... + 3389137.

It is an arithmetic number, because the mean of its divisors is an integer number (5083704).

Almost surely, 2^13556542 is an apocalyptic number.

13556542 is a deficient number, since it is larger than the sum of its proper divisors (6778274).

13556542 is an equidigital number, since it uses as much as digits as its factorization.

13556542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6778273.

The product of its digits is 18000, while the sum is 31.

The square root of 13556542 is about 3681.9209660176. The cubic root of 13556542 is about 238.4421200709.

The spelling of 13556542 in words is "thirteen million, five hundred fifty-six thousand, five hundred forty-two".