51393343 has 4 divisors (see below), whose sum is σ = 51457680. Its totient is φ = 51329008.

The previous prime is 51393337. The next prime is 51393359. The reversal of 51393343 is 34339315.

51393343 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 cyclic number.

It is not a de Polignac number, because 51393343 - 2⁵ = 51393311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51393323) 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 3 ways as a sum of consecutive naturals, for example, 30955 + ... + 32572.

It is an arithmetic number, because the mean of its divisors is an integer number (12864420).

Almost surely, 2^51393343 is an apocalyptic number.

51393343 is a deficient number, since it is larger than the sum of its proper divisors (64337).

51393343 is an equidigital number, since it uses as much as digits as its factorization.

51393343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64336.

The product of its digits is 14580, while the sum is 31.

The square root of 51393343 is about 7168.9150504103. The cubic root of 51393343 is about 371.7939251545.

The spelling of 51393343 in words is "fifty-one million, three hundred ninety-three thousand, three hundred forty-three".