51696722 has 16 divisors (see below), whose sum is σ = 96679872. Its totient is φ = 20141520.

The previous prime is 51696703. The next prime is 51696727. The reversal of 51696722 is 22769615.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51696727) 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 7 ways as a sum of consecutive naturals, for example, 167693 + ... + 168000.

It is an arithmetic number, because the mean of its divisors is an integer number (6042492).

Almost surely, 2^51696722 is an apocalyptic number.

51696722 is a deficient number, since it is larger than the sum of its proper divisors (44983150).

51696722 is a wasteful number, since it uses less digits than its factorization.

51696722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335713.

The product of its digits is 45360, while the sum is 38.

The square root of 51696722 is about 7190.0432543901. The cubic root of 51696722 is about 372.5240667303.

The spelling of 51696722 in words is "fifty-one million, six hundred ninety-six thousand, seven hundred twenty-two".