5515405500 has 384 divisors, whose sum is σ = 18773314560. Its totient is φ = 1244160000.

The previous prime is 5515405499. The next prime is 5515405501. The reversal of 5515405500 is 55045155.

It is an interprime number because it is at equal distance from previous prime (5515405499) and next prime (5515405501).

It is a super-3 number, since 3×5515405500³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515405501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22885380 + ... + 22885620.

It is an arithmetic number, because the mean of its divisors is an integer number (48888840).

Almost surely, 2^5515405500 is an apocalyptic number.

5515405500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5515405500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9386657280).

5515405500 is an abundant number, since it is smaller than the sum of its proper divisors (13257909060).

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

5515405500 is a wasteful number, since it uses less digits than its factorization.

5515405500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 5515405500 is about 74265.7761017819. The cubic root of 5515405500 is about 1766.8207155729.

It can be divided in two parts, 551540 and 5500, that added together give a triangular number (557040 = T₁₀₅₅).

The spelling of 5515405500 in words is "five billion, five hundred fifteen million, four hundred five thousand, five hundred".