5515151550 has 96 divisors (see below), whose sum is σ = 14346796032. Its totient is φ = 1400446080.

The previous prime is 5515151519. The next prime is 5515151557. The reversal of 5515151550 is 551515155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515151557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250279 + ... + 271421.

It is an arithmetic number, because the mean of its divisors is an integer number (149445792).

Almost surely, 2^5515151550 is an apocalyptic number.

5515151550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 5515151550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7173398016).

5515151550 is an abundant number, since it is smaller than the sum of its proper divisors (8831644482).

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

5515151550 is a wasteful number, since it uses less digits than its factorization.

5515151550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21242 (or 21237 counting only the distinct ones).

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

The square root of 5515151550 is about 74264.0663443633. The cubic root of 5515151550 is about 1766.7935981345.

The spelling of 5515151550 in words is "five billion, five hundred fifteen million, one hundred fifty-one thousand, five hundred fifty".