551531401143100 has 72 divisors (see below), whose sum is σ = 1367816432895360. Its totient is φ = 189093914761920.

The previous prime is 551531401143061. The next prime is 551531401143133. The reversal of 551531401143100 is 1341104135155.

It is a happy number.

It is a super-2 number, since 2×551531401143100² (a number of 30 digits) contains 22 as substring.

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, 46645347 + ... + 57261253.

It is an arithmetic number, because the mean of its divisors is an integer number (18997450456880).

Almost surely, 2^{551531401143100} is an apocalyptic number.

551531401143100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551531401143100 is an abundant number, since it is smaller than the sum of its proper divisors (816285031752260).

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

551531401143100 is a wasteful number, since it uses less digits than its factorization.

551531401143100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10690147 (or 10690140 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

Adding to 551531401143100 its reverse (1341104135155), we get a palindrome (552872505278255).

The spelling of 551531401143100 in words is "five hundred fifty-one trillion, five hundred thirty-one billion, four hundred one million, one hundred forty-three thousand, one hundred".