51237489 has 8 divisors (see below), whose sum is σ = 70163200. Its totient is φ = 33235056.

The previous prime is 51237481. The next prime is 51237493. The reversal of 51237489 is 98473215.

51237489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51237489 - 2³ = 51237481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51237481) 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 7 ways as a sum of consecutive naturals, for example, 230689 + ... + 230910.

It is an arithmetic number, because the mean of its divisors is an integer number (8770400).

Almost surely, 2^51237489 is an apocalyptic number.

It is an amenable number.

51237489 is a deficient number, since it is larger than the sum of its proper divisors (18925711).

51237489 is a wasteful number, since it uses less digits than its factorization.

51237489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461639.

The product of its digits is 60480, while the sum is 39.

The square root of 51237489 is about 7158.0366721609. The cubic root of 51237489 is about 371.4177140176.

The spelling of 51237489 in words is "fifty-one million, two hundred thirty-seven thousand, four hundred eighty-nine".