51988833 has 12 divisors (see below), whose sum is σ = 80871700. Its totient is φ = 31993056.

The previous prime is 51988831. The next prime is 51988837. The reversal of 51988833 is 33888915.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 41177889 = 3288^2 + 6417^2 .

It is not a de Polignac number, because 51988833 - 2¹ = 51988831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51988831) 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, 222058 + ... + 222291.

Almost surely, 2^51988833 is an apocalyptic number.

It is an amenable number.

51988833 is a deficient number, since it is larger than the sum of its proper divisors (28882867).

51988833 is a wasteful number, since it uses less digits than its factorization.

51988833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444368 (or 444365 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 51988833 is about 7210.3282172173. The cubic root of 51988833 is about 373.2243952099.

The spelling of 51988833 in words is "fifty-one million, nine hundred eighty-eight thousand, eight hundred thirty-three".