51319822 has 8 divisors (see below), whose sum is σ = 77954400. Its totient is φ = 25335024.

The previous prime is 51319819. The next prime is 51319841. The reversal of 51319822 is 22891315.

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

It is a super-2 number, since 2×51319822² = 5267448260223368, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 162247 + ... + 162562.

It is an arithmetic number, because the mean of its divisors is an integer number (9744300).

Almost surely, 2^51319822 is an apocalyptic number.

51319822 is a deficient number, since it is larger than the sum of its proper divisors (26634578).

51319822 is a wasteful number, since it uses less digits than its factorization.

51319822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324890.

The product of its digits is 4320, while the sum is 31.

The square root of 51319822 is about 7163.7854518404. The cubic root of 51319822 is about 371.6165500023.

The spelling of 51319822 in words is "fifty-one million, three hundred nineteen thousand, eight hundred twenty-two".