5551001550 has 48 divisors (see below), whose sum is σ = 15296096880. Its totient is φ = 1480266720.

The previous prime is 5551001549. The next prime is 5551001593. The reversal of 5551001550 is 551001555.

5551001550 is a `hidden beast` number, since 5 + 5 + 5 + 100 + 1 + 550 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2054577 + ... + 2057276.

It is an arithmetic number, because the mean of its divisors is an integer number (318668685).

Almost surely, 2^5551001550 is an apocalyptic number.

5551001550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5551001550 is an abundant number, since it is smaller than the sum of its proper divisors (9745095330).

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

5551001550 is a wasteful number, since it uses less digits than its factorization.

5551001550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111874 (or 4111863 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 5551001550 is about 74505.0437889946. The cubic root of 5551001550 is about 1770.6135477107.

The spelling of 5551001550 in words is "five billion, five hundred fifty-one million, one thousand, five hundred fifty".