15216479 has 4 divisors (see below), whose sum is σ = 16111584. Its totient is φ = 14321376.

The previous prime is 15216463. The next prime is 15216493. The reversal of 15216479 is 97461251.

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 15216479 - 2⁴ = 15216463 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 (15216449) 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, 447527 + ... + 447560.

It is an arithmetic number, because the mean of its divisors is an integer number (4027896).

Almost surely, 2^15216479 is an apocalyptic number.

15216479 is a deficient number, since it is larger than the sum of its proper divisors (895105).

15216479 is an equidigital number, since it uses as much as digits as its factorization.

15216479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895104.

The product of its digits is 15120, while the sum is 35.

The square root of 15216479 is about 3900.8305525875. The cubic root of 15216479 is about 247.8019523171.

It can be divided in two parts, 1521 and 6479, that added together give a cube (8000 = 20³).

The spelling of 15216479 in words is "fifteen million, two hundred sixteen thousand, four hundred seventy-nine".