51767889 has 12 divisors (see below), whose sum is σ = 69534576. Its totient is φ = 34258152.

The previous prime is 51767827. The next prime is 51767927. The reversal of 51767889 is 98876715.

51767889 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 51767889 - 2²¹ = 49670737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51767819) 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 11 ways as a sum of consecutive naturals, for example, 149014 + ... + 149360.

It is an arithmetic number, because the mean of its divisors is an integer number (5794548).

Almost surely, 2^51767889 is an apocalyptic number.

It is an amenable number.

51767889 is a deficient number, since it is larger than the sum of its proper divisors (17766687).

51767889 is an equidigital number, since it uses as much as digits as its factorization.

51767889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 573 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 51767889 is about 7194.9905489861. The cubic root of 51767889 is about 372.6949303305.

The spelling of 51767889 in words is "fifty-one million, seven hundred sixty-seven thousand, eight hundred eighty-nine".