51766772 has 12 divisors (see below), whose sum is σ = 91200900. Its totient is φ = 25709376.

The previous prime is 51766763. The next prime is 51766783. The reversal of 51766772 is 27766715.

It can be written as a sum of positive squares in 2 ways, for example, as 11874916 + 39891856 = 3446^2 + 6316^2 .

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, 42833 + ... + 44024.

It is an arithmetic number, because the mean of its divisors is an integer number (7600075).

Almost surely, 2^51766772 is an apocalyptic number.

It is an amenable number.

51766772 is a deficient number, since it is larger than the sum of its proper divisors (39434128).

51766772 is a wasteful number, since it uses less digits than its factorization.

51766772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87010 (or 87008 counting only the distinct ones).

The product of its digits is 123480, while the sum is 41.

The square root of 51766772 is about 7194.9129251159. The cubic root of 51766772 is about 372.6922497548.

The spelling of 51766772 in words is "fifty-one million, seven hundred sixty-six thousand, seven hundred seventy-two".