5515443450 has 144 divisors (see below), whose sum is σ = 17116422336. Its totient is φ = 1258406400.

The previous prime is 5515443421. The next prime is 5515443457. The reversal of 5515443450 is 543445155.

5515443450 is a `hidden beast` number, since 55 + 154 + 4 + 3 + 450 = 666.

It is not an unprimeable number, because it can be changed into a prime (5515443457) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51379 + ... + 116921.

It is an arithmetic number, because the mean of its divisors is an integer number (118864044).

Almost surely, 2^5515443450 is an apocalyptic number.

5515443450 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 5515443450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8558211168).

5515443450 is an abundant number, since it is smaller than the sum of its proper divisors (11600978886).

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

5515443450 is a wasteful number, since it uses less digits than its factorization.

5515443450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65589 (or 65581 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 5515443450 is about 74266.0316026109. The cubic root of 5515443450 is about 1766.8247679007.

The spelling of 5515443450 in words is "five billion, five hundred fifteen million, four hundred forty-three thousand, four hundred fifty".