51912638 has 12 divisors (see below), whose sum is σ = 78886080. Its totient is φ = 25621596.

The previous prime is 51912593. The next prime is 51912649. The reversal of 51912638 is 83621915.

It is a junction number, because it is equal to n+sod(n) for n = 51912598 and 51912607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10403 + ... + 14561.

It is an arithmetic number, because the mean of its divisors is an integer number (6573840).

Almost surely, 2^51912638 is an apocalyptic number.

51912638 is a deficient number, since it is larger than the sum of its proper divisors (26973442).

51912638 is an equidigital number, since it uses as much as digits as its factorization.

51912638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4319 (or 4240 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 51912638 is about 7205.0425397773. The cubic root of 51912638 is about 373.0419731054.

The spelling of 51912638 in words is "fifty-one million, nine hundred twelve thousand, six hundred thirty-eight".