51082489 has 2 divisors, whose sum is σ = 51082490. Its totient is φ = 51082488.

The previous prime is 51082477. The next prime is 51082511. The reversal of 51082489 is 98428015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32661225 + 18421264 = 5715^2 + 4292^2 .

It is a cyclic number.

It is not a de Polignac number, because 51082489 - 2¹³ = 51074297 is a prime.

It is not a weakly prime, because it can be changed into another prime (51082439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25541244 + 25541245.

It is an arithmetic number, because the mean of its divisors is an integer number (25541245).

Almost surely, 2^51082489 is an apocalyptic number.

It is an amenable number.

51082489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51082489 is an equidigital number, since it uses as much as digits as its factorization.

51082489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 51082489 is about 7147.2014802998. The cubic root of 51082489 is about 371.0428069166.

The spelling of 51082489 in words is "fifty-one million, eighty-two thousand, four hundred eighty-nine".