15505055 has 8 divisors (see below), whose sum is σ = 18628272. Its totient is φ = 12389248.

The previous prime is 15505043. The next prime is 15505079. The reversal of 15505055 is 55050551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15505055 - 2²⁰ = 14456479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5207 + ... + 7623.

It is an arithmetic number, because the mean of its divisors is an integer number (2328534).

Almost surely, 2^15505055 is an apocalyptic number.

15505055 is a deficient number, since it is larger than the sum of its proper divisors (3123217).

15505055 is a wasteful number, since it uses less digits than its factorization.

15505055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3705.

The product of its (nonzero) digits is 3125, while the sum is 26.

The square root of 15505055 is about 3937.6458703139. The cubic root of 15505055 is about 249.3586494180.

The spelling of 15505055 in words is "fifteen million, five hundred five thousand, fifty-five".