51166722 has 16 divisors (see below), whose sum is σ = 103736160. Its totient is φ = 16821792.

The previous prime is 51166721. The next prime is 51166727. The reversal of 51166722 is 22766115.

It is a self number, because there is not a number n which added to its sum of digits gives 51166722.

It is not an unprimeable number, because it can be changed into a prime (51166721) 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, 57972 + ... + 58847.

It is an arithmetic number, because the mean of its divisors is an integer number (6483510).

Almost surely, 2^51166722 is an apocalyptic number.

51166722 is an abundant number, since it is smaller than the sum of its proper divisors (52569438).

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

51166722 is a wasteful number, since it uses less digits than its factorization.

51166722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116897.

The product of its digits is 5040, while the sum is 30.

The square root of 51166722 is about 7153.0917790841. The cubic root of 51166722 is about 371.2466398816.

The spelling of 51166722 in words is "fifty-one million, one hundred sixty-six thousand, seven hundred twenty-two".