551250243232 has 144 divisors (see below), whose sum is σ = 1250520979680. Its totient is φ = 237727199232.

The previous prime is 551250243161. The next prime is 551250243253. The reversal of 551250243232 is 232342052155.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 16694643 + ... + 16727629.

It is an arithmetic number, because the mean of its divisors is an integer number (8684173470).

Almost surely, 2^551250243232 is an apocalyptic number.

551250243232 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551250243232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (625260489840).

551250243232 is an abundant number, since it is smaller than the sum of its proper divisors (699270736448).

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

551250243232 is a wasteful number, since it uses less digits than its factorization.

551250243232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33183 (or 33158 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 551250243232 its reverse (232342052155), we get a palindrome (783592295387).

The spelling of 551250243232 in words is "five hundred fifty-one billion, two hundred fifty million, two hundred forty-three thousand, two hundred thirty-two".