15542 has 8 divisors (see below), whose sum is σ = 24600. Its totient is φ = 7344.

The previous prime is 15541. The next prime is 15551. The reversal of 15542 is 24551.

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

It is a self number, because there is not a number n which added to its sum of digits gives 15542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167 + ... + 242.

It is an arithmetic number, because the mean of its divisors is an integer number (3075).

2¹⁵⁵⁴² is an apocalyptic number.

15542 is a deficient number, since it is larger than the sum of its proper divisors (9058).

15542 is a wasteful number, since it uses less digits than its factorization.

15542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430.

The product of its digits is 200, while the sum is 17.

The square root of 15542 is about 124.6675579291. The cubic root of 15542 is about 24.9556547197.

Subtracting 15542 from its reverse (24551), we obtain a palindrome (9009).

The spelling of 15542 in words is "fifteen thousand, five hundred forty-two".