51331622 has 16 divisors (see below), whose sum is σ = 78899712. Its totient is φ = 25038720.

The previous prime is 51331603. The next prime is 51331639. The reversal of 51331622 is 22613315.

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 7 ways as a sum of consecutive naturals, for example, 13838 + ... + 17150.

It is an arithmetic number, because the mean of its divisors is an integer number (4931232).

Almost surely, 2^51331622 is an apocalyptic number.

51331622 is a deficient number, since it is larger than the sum of its proper divisors (27568090).

51331622 is a wasteful number, since it uses less digits than its factorization.

51331622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its digits is 1080, while the sum is 23.

The square root of 51331622 is about 7164.6089914244. The cubic root of 51331622 is about 371.6450298312.

Adding to 51331622 its reverse (22613315), we get a palindrome (73944937).

The spelling of 51331622 in words is "fifty-one million, three hundred thirty-one thousand, six hundred twenty-two".