505623241 has 4 divisors (see below), whose sum is σ = 519288772. Its totient is φ = 491957712.

The previous prime is 505623221. The next prime is 505623247. The reversal of 505623241 is 142326505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142326505 = 5 ⋅28465301.

It can be written as a sum of positive squares in 2 ways, for example, as 199233225 + 306390016 = 14115^2 + 17504^2 .

It is a cyclic number.

It is not a de Polignac number, because 505623241 - 2⁹ = 505622729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505623247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6832710 + ... + 6832783.

It is an arithmetic number, because the mean of its divisors is an integer number (129822193).

Almost surely, 2^505623241 is an apocalyptic number.

It is an amenable number.

505623241 is a deficient number, since it is larger than the sum of its proper divisors (13665531).

505623241 is a wasteful number, since it uses less digits than its factorization.

505623241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13665530.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 505623241 is about 22486.0677086946. The cubic root of 505623241 is about 796.6648869514.

Adding to 505623241 its reverse (142326505), we get a palindrome (647949746).

The spelling of 505623241 in words is "five hundred five million, six hundred twenty-three thousand, two hundred forty-one".