51281468 has 12 divisors (see below), whose sum is σ = 102562992. Its totient is φ = 21977760.

The previous prime is 51281453. The next prime is 51281473. The reversal of 51281468 is 86418215.

51281468 is an admirable number.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 2.

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, 915713 + ... + 915768.

It is an arithmetic number, because the mean of its divisors is an integer number (8546916).

Almost surely, 2^51281468 is an apocalyptic number.

It is an amenable number.

51281468 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.

51281468 is a wasteful number, since it uses less digits than its factorization.

51281468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831492 (or 1831490 counting only the distinct ones).

The product of its digits is 15360, while the sum is 35.

The square root of 51281468 is about 7161.1080148256. The cubic root of 51281468 is about 371.5239507379.

The spelling of 51281468 in words is "fifty-one million, two hundred eighty-one thousand, four hundred sixty-eight".