51489417 has 16 divisors (see below), whose sum is σ = 78579072. Its totient is φ = 29377920.

The previous prime is 51489397. The next prime is 51489421. The reversal of 51489417 is 71498415.

It is not a de Polignac number, because 51489417 - 2⁷ = 51489289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51489457) 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 in 15 ways as a sum of consecutive naturals, for example, 16567 + ... + 19427.

It is an arithmetic number, because the mean of its divisors is an integer number (4911192).

Almost surely, 2^51489417 is an apocalyptic number.

It is an amenable number.

51489417 is a deficient number, since it is larger than the sum of its proper divisors (27089655).

51489417 is a wasteful number, since it uses less digits than its factorization.

51489417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its digits is 40320, while the sum is 39.

The square root of 51489417 is about 7175.6126567702. The cubic root of 51489417 is about 372.0254564034.

The spelling of 51489417 in words is "fifty-one million, four hundred eighty-nine thousand, four hundred seventeen".