51322889 has 2 divisors, whose sum is σ = 51322890. Its totient is φ = 51322888.

The previous prime is 51322883. The next prime is 51322897. The reversal of 51322889 is 98822315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 10465225 = 6392^2 + 3235^2 .

It is a cyclic number.

It is not a de Polignac number, because 51322889 - 2¹² = 51318793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51322883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25661444 + 25661445.

It is an arithmetic number, because the mean of its divisors is an integer number (25661445).

Almost surely, 2^51322889 is an apocalyptic number.

It is an amenable number.

51322889 is a deficient number, since it is larger than the sum of its proper divisors (1).

51322889 is an equidigital number, since it uses as much as digits as its factorization.

51322889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 51322889 is about 7163.9995114461. Note that the first 3 decimals coincide. The cubic root of 51322889 is about 371.6239527641.

The spelling of 51322889 in words is "fifty-one million, three hundred twenty-two thousand, eight hundred eighty-nine".