51867761 has 16 divisors (see below), whose sum is σ = 59019840. Its totient is φ = 45165120.

The previous prime is 51867757. The next prime is 51867787. The reversal of 51867761 is 16776815.

51867761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51867761 - 2² = 51867757 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51867721) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 24035 + ... + 26103.

It is an arithmetic number, because the mean of its divisors is an integer number (3688740).

Almost surely, 2^51867761 is an apocalyptic number.

It is an amenable number.

51867761 is a deficient number, since it is larger than the sum of its proper divisors (7152079).

51867761 is a wasteful number, since it uses less digits than its factorization.

51867761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176.

The product of its digits is 70560, while the sum is 41.

The square root of 51867761 is about 7201.9275891944. The cubic root of 51867761 is about 372.9344473876.

The spelling of 51867761 in words is "fifty-one million, eight hundred sixty-seven thousand, seven hundred sixty-one".