51431282 has 24 divisors (see below), whose sum is σ = 90837936. Its totient is φ = 21772968.

The previous prime is 51431279. The next prime is 51431293. The reversal of 51431282 is 28213415.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4973 + ... + 11295.

It is an arithmetic number, because the mean of its divisors is an integer number (3784914).

Almost surely, 2^51431282 is an apocalyptic number.

51431282 is a deficient number, since it is larger than the sum of its proper divisors (39406654).

51431282 is a wasteful number, since it uses less digits than its factorization.

51431282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6422 (or 6415 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 51431282 is about 7171.5606390799. The cubic root of 51431282 is about 371.8853897905.

Adding to 51431282 its reverse (28213415), we get a palindrome (79644697).

The spelling of 51431282 in words is "fifty-one million, four hundred thirty-one thousand, two hundred eighty-two".