51782733 has 20 divisors (see below), whose sum is σ = 81428160. Its totient is φ = 32703912.

The previous prime is 51782701. The next prime is 51782737. The reversal of 51782733 is 33728715.

It is not a de Polignac number, because 51782733 - 2⁵ = 51782701 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51782737) 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 19 ways as a sum of consecutive naturals, for example, 15285 + ... + 18362.

It is an arithmetic number, because the mean of its divisors is an integer number (4071408).

Almost surely, 2^51782733 is an apocalyptic number.

It is an amenable number.

51782733 is a deficient number, since it is larger than the sum of its proper divisors (29645427).

51782733 is a wasteful number, since it uses less digits than its factorization.

51782733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33678 (or 33669 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 51782733 is about 7196.0220260919. The cubic root of 51782733 is about 372.7305492889.

The spelling of 51782733 in words is "fifty-one million, seven hundred eighty-two thousand, seven hundred thirty-three".