15542000555 has 4 divisors (see below), whose sum is σ = 18650400672. Its totient is φ = 12433600440.

The previous prime is 15542000533. The next prime is 15542000557. The reversal of 15542000555 is 55500024551.

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

It is not a de Polignac number, because 15542000555 - 2²⁴ = 15525223339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15542000557) 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, 1554200051 + ... + 1554200060.

It is an arithmetic number, because the mean of its divisors is an integer number (4662600168).

Almost surely, 2^15542000555 is an apocalyptic number.

15542000555 is a deficient number, since it is larger than the sum of its proper divisors (3108400117).

15542000555 is an equidigital number, since it uses as much as digits as its factorization.

15542000555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108400116.

The product of its (nonzero) digits is 25000, while the sum is 32.

The spelling of 15542000555 in words is "fifteen billion, five hundred forty-two million, five hundred fifty-five", and thus it is an aban number.