51070489 has 2 divisors, whose sum is σ = 51070490. Its totient is φ = 51070488.

The previous prime is 51070451. The next prime is 51070493. The reversal of 51070489 is 98407015.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48720400 + 2350089 = 6980^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 51070489 - 2¹⁹ = 50546201 is a prime.

It is not a weakly prime, because it can be changed into another prime (51070589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25535244 + 25535245.

It is an arithmetic number, because the mean of its divisors is an integer number (25535245).

Almost surely, 2^51070489 is an apocalyptic number.

It is an amenable number.

51070489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51070489 is an equidigital number, since it uses as much as digits as its factorization.

51070489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 51070489 is about 7146.3619415756. The cubic root of 51070489 is about 371.0137502381.

The spelling of 51070489 in words is "fifty-one million, seventy thousand, four hundred eighty-nine".