51560489 has 2 divisors, whose sum is σ = 51560490. Its totient is φ = 51560488.

The previous prime is 51560479. The next prime is 51560491. The reversal of 51560489 is 98406515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42680089 + 8880400 = 6533^2 + 2980^2 .

It is a cyclic number.

It is not a de Polignac number, because 51560489 - 2⁸ = 51560233 is a prime.

Together with 51560491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51560419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25780244 + 25780245.

It is an arithmetic number, because the mean of its divisors is an integer number (25780245).

Almost surely, 2^51560489 is an apocalyptic number.

It is an amenable number.

51560489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51560489 is an equidigital number, since it uses as much as digits as its factorization.

51560489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51560489 is about 7180.5632787407. The cubic root of 51560489 is about 372.1965494071.

The spelling of 51560489 in words is "fifty-one million, five hundred sixty thousand, four hundred eighty-nine".