51994822 has 8 divisors (see below), whose sum is σ = 85082472. Its totient is φ = 23634000.

The previous prime is 51994799. The next prime is 51994829. The reversal of 51994822 is 22849915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51994829) 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 3 ways as a sum of consecutive naturals, for example, 1181679 + ... + 1181722.

It is an arithmetic number, because the mean of its divisors is an integer number (10635309).

Almost surely, 2^51994822 is an apocalyptic number.

51994822 is a deficient number, since it is larger than the sum of its proper divisors (33087650).

51994822 is a wasteful number, since it uses less digits than its factorization.

51994822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363414.

The product of its digits is 51840, while the sum is 40.

The square root of 51994822 is about 7210.7435122878. The cubic root of 51994822 is about 373.2387262046.

The spelling of 51994822 in words is "fifty-one million, nine hundred ninety-four thousand, eight hundred twenty-two".