15655423 has 4 divisors (see below), whose sum is σ = 17891920. Its totient is φ = 13418928.

The previous prime is 15655379. The next prime is 15655427. The reversal of 15655423 is 32455651.

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

It is a cyclic number.

It is not a de Polignac number, because 15655423 - 2⁹ = 15654911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15655427) 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, 1118238 + ... + 1118251.

It is an arithmetic number, because the mean of its divisors is an integer number (4472980).

Almost surely, 2^15655423 is an apocalyptic number.

15655423 is a deficient number, since it is larger than the sum of its proper divisors (2236497).

15655423 is an equidigital number, since it uses as much as digits as its factorization.

15655423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236496.

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

The square root of 15655423 is about 3956.6934427625. The cubic root of 15655423 is about 250.1621508057.

The spelling of 15655423 in words is "fifteen million, six hundred fifty-five thousand, four hundred twenty-three".