51022223 has 16 divisors (see below), whose sum is σ = 61961280. Its totient is φ = 41078016.

The previous prime is 51022217. The next prime is 51022241. The reversal of 51022223 is 32222015.

It is not a de Polignac number, because 51022223 - 2⁶ = 51022159 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 (51022243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4115 + ... + 10907.

It is an arithmetic number, because the mean of its divisors is an integer number (3872580).

Almost surely, 2^51022223 is an apocalyptic number.

51022223 is a deficient number, since it is larger than the sum of its proper divisors (10939057).

51022223 is a wasteful number, since it uses less digits than its factorization.

51022223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 51022223 is about 7142.9841802989. The cubic root of 51022223 is about 370.8968334413.

Adding to 51022223 its reverse (32222015), we get a palindrome (83244238).

It can be divided in two parts, 5 and 1022223, that multiplied together give a palindrome (5111115).

The spelling of 51022223 in words is "fifty-one million, twenty-two thousand, two hundred twenty-three".