65257223 has 2 divisors, whose sum is σ = 65257224. Its totient is φ = 65257222.

The previous prime is 65257147. The next prime is 65257243. The reversal of 65257223 is 32275256.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65257223 - 2¹⁰ = 65256199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65257223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65257243) 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 as a sum of consecutive naturals, namely, 32628611 + 32628612.

It is an arithmetic number, because the mean of its divisors is an integer number (32628612).

Almost surely, 2^65257223 is an apocalyptic number.

65257223 is a deficient number, since it is larger than the sum of its proper divisors (1).

65257223 is an equidigital number, since it uses as much as digits as its factorization.

65257223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 32.

The square root of 65257223 is about 8078.1942908053. The cubic root of 65257223 is about 402.6022486268.

It can be divided in two parts, 652 and 57223, that added together give a palindrome (57875).

The spelling of 65257223 in words is "sixty-five million, two hundred fifty-seven thousand, two hundred twenty-three".