51152489 has 2 divisors, whose sum is σ = 51152490. Its totient is φ = 51152488.

The previous prime is 51152477. The next prime is 51152513. The reversal of 51152489 is 98425115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49942489 + 1210000 = 7067^2 + 1100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51152489 is a prime.

It is not a weakly prime, because it can be changed into another prime (51157489) 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, 25576244 + 25576245.

It is an arithmetic number, because the mean of its divisors is an integer number (25576245).

Almost surely, 2^51152489 is an apocalyptic number.

It is an amenable number.

51152489 is a deficient number, since it is larger than the sum of its proper divisors (1).

51152489 is an equidigital number, since it uses as much as digits as its factorization.

51152489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 35.

The square root of 51152489 is about 7152.0968254072. The cubic root of 51152489 is about 371.2122135772.

The spelling of 51152489 in words is "fifty-one million, one hundred fifty-two thousand, four hundred eighty-nine".