55605515 has 8 divisors (see below), whose sum is σ = 76259040. Its totient is φ = 38129472.

The previous prime is 55605503. The next prime is 55605523. The reversal of 55605515 is 51550655.

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 55605515 - 2²² = 51411211 is a prime.

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, 794330 + ... + 794399.

It is an arithmetic number, because the mean of its divisors is an integer number (9532380).

Almost surely, 2^55605515 is an apocalyptic number.

55605515 is a deficient number, since it is larger than the sum of its proper divisors (20653525).

55605515 is a wasteful number, since it uses less digits than its factorization.

55605515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588741.

The product of its (nonzero) digits is 18750, while the sum is 32.

The square root of 55605515 is about 7456.9105533056. The cubic root of 55605515 is about 381.6857584910.

The spelling of 55605515 in words is "fifty-five million, six hundred five thousand, five hundred fifteen".