505413023 has 2 divisors, whose sum is σ = 505413024. Its totient is φ = 505413022.

The previous prime is 505413019. The next prime is 505413059. The reversal of 505413023 is 320314505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505413023 - 2² = 505413019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505413023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505415023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252706511 + 252706512.

It is an arithmetic number, because the mean of its divisors is an integer number (252706512).

Almost surely, 2^505413023 is an apocalyptic number.

505413023 is a deficient number, since it is larger than the sum of its proper divisors (1).

505413023 is an equidigital number, since it uses as much as digits as its factorization.

505413023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 505413023 is about 22481.3928171722. The cubic root of 505413023 is about 796.5544644730.

Adding to 505413023 its reverse (320314505), we get a palindrome (825727528).

The spelling of 505413023 in words is "five hundred five million, four hundred thirteen thousand, twenty-three".