550525311551 has 4 divisors (see below), whose sum is σ = 550547936400. Its totient is φ = 550502686704.

The previous prime is 550525311509. The next prime is 550525311577. The reversal of 550525311551 is 155113525055.

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 550525311551 - 2⁶ = 550525311487 is a prime.

It is a super-2 number, since 2×550525311551² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550525311451) 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, 11275886 + ... + 11324603.

It is an arithmetic number, because the mean of its divisors is an integer number (137636984100).

Almost surely, 2^550525311551 is an apocalyptic number.

550525311551 is a deficient number, since it is larger than the sum of its proper divisors (22624849).

550525311551 is a wasteful number, since it uses less digits than its factorization.

550525311551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22624848.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 550525311551 in words is "five hundred fifty billion, five hundred twenty-five million, three hundred eleven thousand, five hundred fifty-one".