51745398 has 16 divisors (see below), whose sum is σ = 108937920. Its totient is φ = 16340616.

The previous prime is 51745387. The next prime is 51745427. The reversal of 51745398 is 89354715.

51745398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 226840 + ... + 227067.

It is an arithmetic number, because the mean of its divisors is an integer number (6808620).

Almost surely, 2^51745398 is an apocalyptic number.

51745398 is an abundant number, since it is smaller than the sum of its proper divisors (57192522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51745398 is a wasteful number, since it uses less digits than its factorization.

51745398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453931.

The product of its digits is 151200, while the sum is 42.

The square root of 51745398 is about 7193.4274167465. The cubic root of 51745398 is about 372.6409490173.

The spelling of 51745398 in words is "fifty-one million, seven hundred forty-five thousand, three hundred ninety-eight".