51553766 has 16 divisors (see below), whose sum is σ = 85183488. Its totient is φ = 23205000.

The previous prime is 51553759. The next prime is 51553807. The reversal of 51553766 is 66735515.

51553766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 9110 + ... + 13641.

It is an arithmetic number, because the mean of its divisors is an integer number (5323968).

Almost surely, 2^51553766 is an apocalyptic number.

51553766 is a deficient number, since it is larger than the sum of its proper divisors (33629722).

51553766 is a wasteful number, since it uses less digits than its factorization.

51553766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22867.

The product of its digits is 94500, while the sum is 38.

The square root of 51553766 is about 7180.0951247181. The cubic root of 51553766 is about 372.1803717343.

The spelling of 51553766 in words is "fifty-one million, five hundred fifty-three thousand, seven hundred sixty-six".