550051555 has 48 divisors (see below), whose sum is σ = 731021760. Its totient is φ = 396704000.

The previous prime is 550051547. The next prime is 550051559. The reversal of 550051555 is 555150055.

It is not a de Polignac number, because 550051555 - 2³ = 550051547 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550051559) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5446005 + ... + 5446105.

It is an arithmetic number, because the mean of its divisors is an integer number (15229620).

Almost surely, 2^550051555 is an apocalyptic number.

550051555 is a deficient number, since it is larger than the sum of its proper divisors (180970205).

550051555 is a wasteful number, since it uses less digits than its factorization.

550051555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 229 counting only the distinct ones).

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

The square root of 550051555 is about 23453.1779296538. The cubic root of 550051555 is about 819.3468698663.

The spelling of 550051555 in words is "five hundred fifty million, fifty-one thousand, five hundred fifty-five".