5551532550 has 72 divisors (see below), whose sum is σ = 14947621416. Its totient is φ = 1477182720.

The previous prime is 5551532549. The next prime is 5551532551. The reversal of 5551532550 is 552351555.

5551532550 is a `hidden beast` number, since 5 + 5 + 51 + 53 + 2 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (5551532549) and next prime (5551532551).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551532551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 196942 + ... + 223358.

It is an arithmetic number, because the mean of its divisors is an integer number (207605853).

Almost surely, 2^5551532550 is an apocalyptic number.

5551532550 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 5551532550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7473810708).

5551532550 is an abundant number, since it is smaller than the sum of its proper divisors (9396088866).

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

5551532550 is a wasteful number, since it uses less digits than its factorization.

5551532550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26902 (or 26894 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 36.

The square root of 5551532550 is about 74508.6072209111. The cubic root of 5551532550 is about 1770.6700039380.

The spelling of 5551532550 in words is "five billion, five hundred fifty-one million, five hundred thirty-two thousand, five hundred fifty".