551965696 has 44 divisors (see below), whose sum is σ = 1114968148. Its totient is φ = 273088512.

The previous prime is 551965693. The next prime is 551965721. The reversal of 551965696 is 696569155.

It can be written as a sum of positive squares in 2 ways, for example, as 406425600 + 145540096 = 20160^2 + 12064^2 .

It is a super-2 number, since 2×551965696² = 609332259121528832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551965693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96550 + ... + 102106.

Almost surely, 2^551965696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551965696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557484074).

551965696 is an abundant number, since it is smaller than the sum of its proper divisors (563002452).

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

551965696 is an equidigital number, since it uses as much as digits as its factorization.

551965696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674 (or 5656 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 52.

The square root of 551965696 is about 23493.9501999983. The cubic root of 551965696 is about 820.2961928206.

The spelling of 551965696 in words is "five hundred fifty-one million, nine hundred sixty-five thousand, six hundred ninety-six".