51867764 has 24 divisors (see below), whose sum is σ = 97978440. Its totient is φ = 23883264.

The previous prime is 51867757. The next prime is 51867787. The reversal of 51867764 is 46776815.

51867764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4368100 + 47499664 = 2090^2 + 6892^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28712 + ... + 30464.

It is an arithmetic number, because the mean of its divisors is an integer number (4082435).

Almost surely, 2^51867764 is an apocalyptic number.

It is an amenable number.

51867764 is a deficient number, since it is larger than the sum of its proper divisors (46110676).

51867764 is a wasteful number, since it uses less digits than its factorization.

51867764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339 (or 2337 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 51867764 is about 7201.9277974720. The cubic root of 51867764 is about 372.9344545777.

The spelling of 51867764 in words is "fifty-one million, eight hundred sixty-seven thousand, seven hundred sixty-four".