51830493 has 16 divisors (see below), whose sum is σ = 81189696. Its totient is φ = 28995840.

The previous prime is 51830491. The next prime is 51830507. The reversal of 51830493 is 39403815.

It is not a de Polignac number, because 51830493 - 2¹ = 51830491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51830491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59980 + ... + 60837.

It is an arithmetic number, because the mean of its divisors is an integer number (5074356).

Almost surely, 2^51830493 is an apocalyptic number.

It is an amenable number.

51830493 is a deficient number, since it is larger than the sum of its proper divisors (29359203).

51830493 is a wasteful number, since it uses less digits than its factorization.

51830493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120844.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 51830493 is about 7199.3397613948. The cubic root of 51830493 is about 372.8451057566.

The spelling of 51830493 in words is "fifty-one million, eight hundred thirty thousand, four hundred ninety-three".