51411223 has 2 divisors, whose sum is σ = 51411224. Its totient is φ = 51411222.

The previous prime is 51411211. The next prime is 51411263. The reversal of 51411223 is 32211415.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51411223 - 2²¹ = 49314071 is a prime.

It is a super-2 number, since 2×51411223² = 5286227700711458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51411223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51411263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25705611 + 25705612.

It is an arithmetic number, because the mean of its divisors is an integer number (25705612).

Almost surely, 2^51411223 is an apocalyptic number.

51411223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51411223 is an equidigital number, since it uses as much as digits as its factorization.

51411223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 19.

The square root of 51411223 is about 7170.1619925912. The cubic root of 51411223 is about 371.8370364748.

Adding to 51411223 its reverse (32211415), we get a palindrome (83622638).

The spelling of 51411223 in words is "fifty-one million, four hundred eleven thousand, two hundred twenty-three".