2015500055 has 8 divisors (see below), whose sum is σ = 2419971792. Its totient is φ = 1611485568.

The previous prime is 2015500049. The next prime is 2015500073. The reversal of 2015500055 is 5500055102.

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 2015500055 - 2⁸ = 2015499799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2015500055.

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, 104537 + ... + 122306.

It is an arithmetic number, because the mean of its divisors is an integer number (302496474).

Almost surely, 2^2015500055 is an apocalyptic number.

2015500055 is a deficient number, since it is larger than the sum of its proper divisors (404471737).

2015500055 is a wasteful number, since it uses less digits than its factorization.

2015500055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228625.

The product of its (nonzero) digits is 1250, while the sum is 23.

The square root of 2015500055 is about 44894.3209660197. The cubic root of 2015500055 is about 1263.1674852234.

Adding to 2015500055 its reverse (5500055102), we get a palindrome (7515555157).

The spelling of 2015500055 in words is "two billion, fifteen million, five hundred thousand, fifty-five".