51696099 has 96 divisors (see below), whose sum is σ = 100638720. Its totient is φ = 24800256.

The previous prime is 51696089. The next prime is 51696101. The reversal of 51696099 is 99069615.

51696099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 7190²-1.

It is not a de Polignac number, because 51696099 - 2⁷ = 51695971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51696049) 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 95 ways as a sum of consecutive naturals, for example, 654342 + ... + 654420.

It is an arithmetic number, because the mean of its divisors is an integer number (1048320).

Almost surely, 2^51696099 is an apocalyptic number.

51696099 is a deficient number, since it is larger than the sum of its proper divisors (48942621).

51696099 is a wasteful number, since it uses less digits than its factorization.

51696099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 45.

The square root of 51696099 is about 7189.9999304590. Note that the first 4 decimals coincide. The cubic root of 51696099 is about 372.5225702883.

The spelling of 51696099 in words is "fifty-one million, six hundred ninety-six thousand, ninety-nine".