51631322 has 16 divisors (see below), whose sum is σ = 81842400. Its totient is φ = 24361200.

The previous prime is 51631291. The next prime is 51631351. The reversal of 51631322 is 22313615.

It is a super-2 number, since 2×51631322² = 5331586822935368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7697 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (5115150).

Almost surely, 2^51631322 is an apocalyptic number.

51631322 is a deficient number, since it is larger than the sum of its proper divisors (30211078).

51631322 is a wasteful number, since it uses less digits than its factorization.

51631322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5341.

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

The square root of 51631322 is about 7185.4938591582. The cubic root of 51631322 is about 372.3669106997.

Adding to 51631322 its reverse (22313615), we get a palindrome (73944937).

The spelling of 51631322 in words is "fifty-one million, six hundred thirty-one thousand, three hundred twenty-two".