550050005551 has 4 divisors (see below), whose sum is σ = 552929848704. Its totient is φ = 547170162400.

The previous prime is 550050005521. The next prime is 550050005563. The reversal of 550050005551 is 155500050055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 550050005551 - 2²⁵ = 550016451119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550050005521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1439921290 + ... + 1439921671.

It is an arithmetic number, because the mean of its divisors is an integer number (138232462176).

Almost surely, 2^550050005551 is an apocalyptic number.

550050005551 is a deficient number, since it is larger than the sum of its proper divisors (2879843153).

550050005551 is a wasteful number, since it uses less digits than its factorization.

550050005551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879843152.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 550050005551 in words is "five hundred fifty billion, fifty million, five thousand, five hundred fifty-one".