5515555110 has 64 divisors (see below), whose sum is σ = 14306604480. Its totient is φ = 1352816640.

The previous prime is 5515555099. The next prime is 5515555141. The reversal of 5515555110 is 115555155.

It is a super-2 number, since 2×5515555110² = 60842696342894224200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84426 + ... + 134754.

It is an arithmetic number, because the mean of its divisors is an integer number (223540695).

Almost surely, 2^5515555110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5515555110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7153302240).

5515555110 is an abundant number, since it is smaller than the sum of its proper divisors (8791049370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5515555110 is a wasteful number, since it uses less digits than its factorization.

5515555110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50633.

The product of its (nonzero) digits is 15625, while the sum is 33.

The square root of 5515555110 is about 74266.7833556833. The cubic root of 5515555110 is about 1766.8366909264.

The spelling of 5515555110 in words is "five billion, five hundred fifteen million, five hundred fifty-five thousand, one hundred ten".