51492398 has 4 divisors (see below), whose sum is σ = 77238600. Its totient is φ = 25746198.

The previous prime is 51492379. The next prime is 51492421. The reversal of 51492398 is 89329415.

51492398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 12873098 + ... + 12873101.

It is an arithmetic number, because the mean of its divisors is an integer number (19309650).

Almost surely, 2^51492398 is an apocalyptic number.

51492398 is a deficient number, since it is larger than the sum of its proper divisors (25746202).

51492398 is a wasteful number, since it uses less digits than its factorization.

51492398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25746201.

The product of its digits is 77760, while the sum is 41.

The square root of 51492398 is about 7175.8203712189. The cubic root of 51492398 is about 372.0326357848.

The spelling of 51492398 in words is "fifty-one million, four hundred ninety-two thousand, three hundred ninety-eight".