51466589 has 2 divisors, whose sum is σ = 51466590. Its totient is φ = 51466588.

The previous prime is 51466579. The next prime is 51466601. The reversal of 51466589 is 98566415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49815364 + 1651225 = 7058^2 + 1285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51466589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51466559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733294 + 25733295.

It is an arithmetic number, because the mean of its divisors is an integer number (25733295).

Almost surely, 2^51466589 is an apocalyptic number.

It is an amenable number.

51466589 is a deficient number, since it is larger than the sum of its proper divisors (1).

51466589 is an equidigital number, since it uses as much as digits as its factorization.

51466589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 44.

The square root of 51466589 is about 7174.0218148539. The cubic root of 51466589 is about 371.9704687121.

The spelling of 51466589 in words is "fifty-one million, four hundred sixty-six thousand, five hundred eighty-nine".