551146752 has 108 divisors (see below), whose sum is σ = 1711422804. Its totient is φ = 169574400.

The previous prime is 551146747. The next prime is 551146759. The reversal of 551146752 is 257641155.

It can be written as a sum of positive squares in 2 ways, for example, as 158155776 + 392990976 = 12576^2 + 19824^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551146759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20752 + ... + 39152.

Almost surely, 2^551146752 is an apocalyptic number.

551146752 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 551146752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855711402).

551146752 is an abundant number, since it is smaller than the sum of its proper divisors (1160276052).

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

551146752 is a wasteful number, since it uses less digits than its factorization.

551146752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18436 (or 18419 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 551146752 is about 23476.5149031963. The cubic root of 551146752 is about 819.8903045806.

The spelling of 551146752 in words is "five hundred fifty-one million, one hundred forty-six thousand, seven hundred fifty-two".