15320055 has 16 divisors (see below), whose sum is σ = 24560640. Its totient is φ = 8154528.

The previous prime is 15320051. The next prime is 15320069. The reversal of 15320055 is 55002351.

It is not a de Polignac number, because 15320055 - 2² = 15320051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15320051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14226 + ... + 15264.

It is an arithmetic number, because the mean of its divisors is an integer number (1535040).

Almost surely, 2^15320055 is an apocalyptic number.

15320055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15320055 is a deficient number, since it is larger than the sum of its proper divisors (9240585).

15320055 is a wasteful number, since it uses less digits than its factorization.

15320055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 15320055 is about 3914.0841840717. The cubic root of 15320055 is about 248.3629300741.

The spelling of 15320055 in words is "fifteen million, three hundred twenty thousand, fifty-five".