51993355 has 16 divisors (see below), whose sum is σ = 65145600. Its totient is φ = 39790080.

The previous prime is 51993353. The next prime is 51993391. The reversal of 51993355 is 55339915.

51993355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51993355 - 2¹ = 51993353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51993353) 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 15 ways as a sum of consecutive naturals, for example, 11911 + ... + 15679.

It is an arithmetic number, because the mean of its divisors is an integer number (4071600).

Almost surely, 2^51993355 is an apocalyptic number.

51993355 is a deficient number, since it is larger than the sum of its proper divisors (13152245).

51993355 is a wasteful number, since it uses less digits than its factorization.

51993355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3894.

The product of its digits is 91125, while the sum is 40.

The square root of 51993355 is about 7210.6417883570. The cubic root of 51993355 is about 373.2352159425.

The spelling of 51993355 in words is "fifty-one million, nine hundred ninety-three thousand, three hundred fifty-five".