5550001561251 has 24 divisors (see below), whose sum is σ = 9644112990720. Its totient is φ = 3004512122736.

The previous prime is 5550001561193. The next prime is 5550001561267. The reversal of 5550001561251 is 1521651000555.

5550001561251 is a `hidden beast` number, since 5 + 550 + 0 + 0 + 1 + 56 + 1 + 2 + 51 = 666.

It is not a de Polignac number, because 5550001561251 - 2⁹ = 5550001560739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5550001561271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2318295195 + ... + 2318297588.

It is an arithmetic number, because the mean of its divisors is an integer number (401838041280).

Almost surely, 2^{5550001561251} is an apocalyptic number.

5550001561251 is a deficient number, since it is larger than the sum of its proper divisors (4094111429469).

5550001561251 is a wasteful number, since it uses less digits than its factorization.

5550001561251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4636592815 (or 4636592812 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

The spelling of 5550001561251 in words is "five trillion, five hundred fifty billion, one million, five hundred sixty-one thousand, two hundred fifty-one".