51789589 has 2 divisors, whose sum is σ = 51789590. Its totient is φ = 51789588.

The previous prime is 51789571. The next prime is 51789613. The reversal of 51789589 is 98598715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 380689 = 7170^2 + 617^2 .

It is a cyclic number.

It is not a de Polignac number, because 51789589 - 2⁷ = 51789461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51789509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25894794 + 25894795.

It is an arithmetic number, because the mean of its divisors is an integer number (25894795).

Almost surely, 2^51789589 is an apocalyptic number.

It is an amenable number.

51789589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51789589 is an equidigital number, since it uses as much as digits as its factorization.

51789589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 52.

The square root of 51789589 is about 7196.4983846312. The cubic root of 51789589 is about 372.7469983233.

The spelling of 51789589 in words is "fifty-one million, seven hundred eighty-nine thousand, five hundred eighty-nine".