51695224 has 16 divisors (see below), whose sum is σ = 110775600. Its totient is φ = 22155072.

The previous prime is 51695213. The next prime is 51695261. The reversal of 51695224 is 42259615.

It is a happy number.

51695224 is nontrivially palindromic in base 15.

51695224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51695224.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 461509 + ... + 461620.

It is an arithmetic number, because the mean of its divisors is an integer number (6923475).

Almost surely, 2^51695224 is an apocalyptic number.

It is an amenable number.

51695224 is an abundant number, since it is smaller than the sum of its proper divisors (59080376).

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

51695224 is a wasteful number, since it uses less digits than its factorization.

51695224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923142 (or 923138 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 51695224 is about 7189.9390818003. The cubic root of 51695224 is about 372.5204685238.

The spelling of 51695224 in words is "fifty-one million, six hundred ninety-five thousand, two hundred twenty-four".