551536650 has 108 divisors (see below), whose sum is σ = 1723789782. Its totient is φ = 126060480.

The previous prime is 551536637. The next prime is 551536651. The reversal of 551536650 is 56635155.

551536650 is a `hidden beast` number, since 551 + 53 + 6 + 6 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 532640241 + 18896409 = 23079^2 + 4347^2 .

It is not an unprimeable number, because it can be changed into a prime (551536651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 9544 + ... + 34556.

Almost surely, 2^551536650 is an apocalyptic number.

551536650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 551536650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861894891).

551536650 is an abundant number, since it is smaller than the sum of its proper divisors (1172253132).

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

551536650 is a wasteful number, since it uses less digits than its factorization.

551536650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25045 (or 25030 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 551536650 is about 23484.8174359521. The cubic root of 551536650 is about 820.0835974656.

The spelling of 551536650 in words is "five hundred fifty-one million, five hundred thirty-six thousand, six hundred fifty".