51264438 has 8 divisors (see below), whose sum is σ = 102528888. Its totient is φ = 17088144.

The previous prime is 51264397. The next prime is 51264457. The reversal of 51264438 is 83446215.

It is a sphenic number, since it is the product of 3 distinct primes.

51264438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 51264399 and 51264408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4272031 + ... + 4272042.

It is an arithmetic number, because the mean of its divisors is an integer number (12816111).

Almost surely, 2^51264438 is an apocalyptic number.

51264438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51264438 is a wasteful number, since it uses less digits than its factorization.

51264438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8544078.

The product of its digits is 23040, while the sum is 33.

The square root of 51264438 is about 7159.9188542888. The cubic root of 51264438 is about 371.4828198730.

The spelling of 51264438 in words is "fifty-one million, two hundred sixty-four thousand, four hundred thirty-eight".