51498189 has 12 divisors (see below), whose sum is σ = 78301600. Its totient is φ = 32525064.

The previous prime is 51498131. The next prime is 51498193. The reversal of 51498189 is 98189415.

51498189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51498189 - 2⁷ = 51498061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51498199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150409 + ... + 150750.

Almost surely, 2^51498189 is an apocalyptic number.

It is an amenable number.

51498189 is a deficient number, since it is larger than the sum of its proper divisors (26803411).

51498189 is a wasteful number, since it uses less digits than its factorization.

51498189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301184 (or 301181 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 51498189 is about 7176.2238677455. The cubic root of 51498189 is about 372.0465819226.

The spelling of 51498189 in words is "fifty-one million, four hundred ninety-eight thousand, one hundred eighty-nine".