51124223 has 2 divisors, whose sum is σ = 51124224. Its totient is φ = 51124222.

The previous prime is 51124217. The next prime is 51124243. The reversal of 51124223 is 32242115.

It is an a-pointer prime, because the next prime (51124243) can be obtained adding 51124223 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51124223 - 2⁴ = 51124207 is a prime.

It is a super-2 number, since 2×51124223² = 5227372354707458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51124195 and 51124204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51124243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25562111 + 25562112.

It is an arithmetic number, because the mean of its divisors is an integer number (25562112).

Almost surely, 2^51124223 is an apocalyptic number.

51124223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51124223 is an equidigital number, since it uses as much as digits as its factorization.

51124223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 20.

The square root of 51124223 is about 7150.1204884953. The cubic root of 51124223 is about 371.1438257827.

Adding to 51124223 its reverse (32242115), we get a palindrome (83366338).

The spelling of 51124223 in words is "fifty-one million, one hundred twenty-four thousand, two hundred twenty-three".