551305313425550 has 48 divisors (see below), whose sum is σ = 1108848173906880. Its totient is φ = 203134273167360.

The previous prime is 551305313425547. The next prime is 551305313425561. The reversal of 551305313425550 is 55524313503155.

It is a super-2 number, since 2×551305313425550² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 551305313425495 and 551305313425504.

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, 6899901395 + ... + 6899981294.

It is an arithmetic number, because the mean of its divisors is an integer number (23101003623060).

Almost surely, 2^{551305313425550} is an apocalyptic number.

551305313425550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551305313425550 is an abundant number, since it is smaller than the sum of its proper divisors (557542860481330).

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

551305313425550 is a wasteful number, since it uses less digits than its factorization.

551305313425550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13799882765 (or 13799882760 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 47.

The spelling of 551305313425550 in words is "five hundred fifty-one trillion, three hundred five billion, three hundred thirteen million, four hundred twenty-five thousand, five hundred fifty".