15915455 has 4 divisors (see below), whose sum is σ = 19098552. Its totient is φ = 12732360.

The previous prime is 15915443. The next prime is 15915463. The reversal of 15915455 is 55451951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55451951 = 661 ⋅83891.

It is not a de Polignac number, because 15915455 - 2¹² = 15911359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1591541 + ... + 1591550.

It is an arithmetic number, because the mean of its divisors is an integer number (4774638).

Almost surely, 2^15915455 is an apocalyptic number.

15915455 is a deficient number, since it is larger than the sum of its proper divisors (3183097).

15915455 is an equidigital number, since it uses as much as digits as its factorization.

15915455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183096.

The product of its digits is 22500, while the sum is 35.

The square root of 15915455 is about 3989.4178773350. The cubic root of 15915455 is about 251.5395924899.

The spelling of 15915455 in words is "fifteen million, nine hundred fifteen thousand, four hundred fifty-five".