51893223 has 4 divisors (see below), whose sum is σ = 69190968. Its totient is φ = 34595480.

The previous prime is 51893189. The next prime is 51893239. The reversal of 51893223 is 32239815.

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 51893223 - 2²² = 47698919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51823223) 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 3 ways as a sum of consecutive naturals, for example, 8648868 + ... + 8648873.

It is an arithmetic number, because the mean of its divisors is an integer number (17297742).

Almost surely, 2^51893223 is an apocalyptic number.

51893223 is a deficient number, since it is larger than the sum of its proper divisors (17297745).

51893223 is a wasteful number, since it uses less digits than its factorization.

51893223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17297744.

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

The square root of 51893223 is about 7203.6950934920. The cubic root of 51893223 is about 372.9954621897.

The spelling of 51893223 in words is "fifty-one million, eight hundred ninety-three thousand, two hundred twenty-three".