51993363 has 8 divisors (see below), whose sum is σ = 72338688. Its totient is φ = 33155144.

The previous prime is 51993353. The next prime is 51993391. The reversal of 51993363 is 36339915.

51993363 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 51993363 - 2⁶ = 51993299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51993313) 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, 376695 + ... + 376832.

It is an arithmetic number, because the mean of its divisors is an integer number (9042336).

Almost surely, 2^51993363 is an apocalyptic number.

51993363 is a deficient number, since it is larger than the sum of its proper divisors (20345325).

51993363 is a wasteful number, since it uses less digits than its factorization.

51993363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753553.

The product of its digits is 65610, while the sum is 39.

The square root of 51993363 is about 7210.6423430926. The cubic root of 51993363 is about 373.2352350852.

The spelling of 51993363 in words is "fifty-one million, nine hundred ninety-three thousand, three hundred sixty-three".