551322512 has 80 divisors (see below), whose sum is σ = 1271168640. Its totient is φ = 229042176.

The previous prime is 551322481. The next prime is 551322553. The reversal of 551322512 is 215223155.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 77939 + ... + 84717.

It is an arithmetic number, because the mean of its divisors is an integer number (15889608).

Almost surely, 2^551322512 is an apocalyptic number.

551322512 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 551322512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (635584320).

551322512 is an abundant number, since it is smaller than the sum of its proper divisors (719846128).

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

551322512 is a wasteful number, since it uses less digits than its factorization.

551322512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840 (or 6834 counting only the distinct ones).

The product of its digits is 3000, while the sum is 26.

The square root of 551322512 is about 23480.2579202188. The cubic root of 551322512 is about 819.9774493104.

Adding to 551322512 its reverse (215223155), we get a palindrome (766545667).

The spelling of 551322512 in words is "five hundred fifty-one million, three hundred twenty-two thousand, five hundred twelve".