51208312 has 16 divisors (see below), whose sum is σ = 96243840. Its totient is φ = 25543296.

The previous prime is 51208277. The next prime is 51208343. The reversal of 51208312 is 21380215.

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, 3928 + ... + 10855.

It is an arithmetic number, because the mean of its divisors is an integer number (6015240).

Almost surely, 2^51208312 is an apocalyptic number.

It is an amenable number.

51208312 is a deficient number, since it is larger than the sum of its proper divisors (45035528).

51208312 is a wasteful number, since it uses less digits than its factorization.

51208312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15222 (or 15218 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 51208312 is about 7155.9983230853. The cubic root of 51208312 is about 371.3471998134.

Adding to 51208312 its reverse (21380215), we get a palindrome (72588527).

The spelling of 51208312 in words is "fifty-one million, two hundred eight thousand, three hundred twelve".