5551004550 has 384 divisors, whose sum is σ = 18048844800. Its totient is φ = 1097349120.

The previous prime is 5551004549. The next prime is 5551004561. The reversal of 5551004550 is 554001555.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14646261 + ... + 14646639.

It is an arithmetic number, because the mean of its divisors is an integer number (47002200).

Almost surely, 2^5551004550 is an apocalyptic number.

5551004550 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 5551004550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9024422400).

5551004550 is an abundant number, since it is smaller than the sum of its proper divisors (12497840250).

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

5551004550 is a wasteful number, since it uses less digits than its factorization.

5551004550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 475 counting only the distinct ones).

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

The square root of 5551004550 is about 74505.0639218570. The cubic root of 5551004550 is about 1770.6138666825.

The spelling of 5551004550 in words is "five billion, five hundred fifty-one million, four thousand, five hundred fifty".