51164223 has 8 divisors (see below), whose sum is σ = 74420736. Its totient is φ = 31008600.

The previous prime is 51164221. The next prime is 51164227. The reversal of 51164223 is 32246115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51164223 - 2¹ = 51164221 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 51164193 and 51164202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51164221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775183 + ... + 775248.

It is an arithmetic number, because the mean of its divisors is an integer number (9302592).

Almost surely, 2^51164223 is an apocalyptic number.

51164223 is a deficient number, since it is larger than the sum of its proper divisors (23256513).

51164223 is a wasteful number, since it uses less digits than its factorization.

51164223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550445.

The product of its digits is 1440, while the sum is 24.

The square root of 51164223 is about 7152.9170972408. The cubic root of 51164223 is about 371.2405958461.

It can be divided in two parts, 5116 and 4223, that added together give a palindrome (9339).

The spelling of 51164223 in words is "fifty-one million, one hundred sixty-four thousand, two hundred twenty-three".