51964166 has 4 divisors (see below), whose sum is σ = 77946252. Its totient is φ = 25982082.

The previous prime is 51964147. The next prime is 51964193. The reversal of 51964166 is 66146915.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12991040 + ... + 12991043.

It is an arithmetic number, because the mean of its divisors is an integer number (19486563).

Almost surely, 2^51964166 is an apocalyptic number.

51964166 is a deficient number, since it is larger than the sum of its proper divisors (25982086).

51964166 is a wasteful number, since it uses less digits than its factorization.

51964166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25982085.

The product of its digits is 38880, while the sum is 38.

The square root of 51964166 is about 7208.6174818754. The cubic root of 51964166 is about 373.1653582844.

The spelling of 51964166 in words is "fifty-one million, nine hundred sixty-four thousand, one hundred sixty-six".