51866782 has 32 divisors (see below), whose sum is σ = 89164800. Its totient is φ = 22411200.

The previous prime is 51866767. The next prime is 51866791. The reversal of 51866782 is 28766815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39594 + ... + 40882.

It is an arithmetic number, because the mean of its divisors is an integer number (2786400).

Almost surely, 2^51866782 is an apocalyptic number.

51866782 is a deficient number, since it is larger than the sum of its proper divisors (37298018).

51866782 is a wasteful number, since it uses less digits than its factorization.

51866782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its digits is 161280, while the sum is 43.

The square root of 51866782 is about 7201.8596209590. The cubic root of 51866782 is about 372.9321010032.

The spelling of 51866782 in words is "fifty-one million, eight hundred sixty-six thousand, seven hundred eighty-two".