51782346 has 48 divisors (see below), whose sum is σ = 139883328. Its totient is φ = 13449600.

The previous prime is 51782327. The next prime is 51782347. The reversal of 51782346 is 64328715.

It is a super-2 number, since 2×51782346² = 5362822714527432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51782346.

It is not an unprimeable number, because it can be changed into a prime (51782347) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17295 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (2914236).

Almost surely, 2^51782346 is an apocalyptic number.

51782346 is an abundant number, since it is smaller than the sum of its proper divisors (88100982).

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

51782346 is a wasteful number, since it uses less digits than its factorization.

51782346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37387 (or 37384 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 51782346 is about 7195.9951361851. The cubic root of 51782346 is about 372.7296207485.

The spelling of 51782346 in words is "fifty-one million, seven hundred eighty-two thousand, three hundred forty-six".