55495815 has 8 divisors (see below), whose sum is σ = 88793328. Its totient is φ = 29597760.

The previous prime is 55495807. The next prime is 55495829. The reversal of 55495815 is 51859455.

It is a happy number.

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

It is not a de Polignac number, because 55495815 - 2³ = 55495807 is a prime.

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, 1849846 + ... + 1849875.

It is an arithmetic number, because the mean of its divisors is an integer number (11099166).

Almost surely, 2^55495815 is an apocalyptic number.

55495815 is a deficient number, since it is larger than the sum of its proper divisors (33297513).

55495815 is a wasteful number, since it uses less digits than its factorization.

55495815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699729.

The product of its digits is 180000, while the sum is 42.

The square root of 55495815 is about 7449.5513287714. The cubic root of 55495815 is about 381.4345934006.

It can be divided in two parts, 554 and 95815, that added together give a palindrome (96369).

The spelling of 55495815 in words is "fifty-five million, four hundred ninety-five thousand, eight hundred fifteen".