505223245 has 8 divisors (see below), whose sum is σ = 609346584. Its totient is φ = 402126144.

The previous prime is 505223237. The next prime is 505223287. The reversal of 505223245 is 542322505.

It can be written as a sum of positive squares in 4 ways, for example, as 317588041 + 187635204 = 17821^2 + 13698^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505223245 - 2³ = 505223237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255474 + ... + 257443.

It is an arithmetic number, because the mean of its divisors is an integer number (76168323).

Almost surely, 2^505223245 is an apocalyptic number.

It is an amenable number.

505223245 is a deficient number, since it is larger than the sum of its proper divisors (104123339).

505223245 is a wasteful number, since it uses less digits than its factorization.

505223245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513119.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 505223245 is about 22477.1716414677. The cubic root of 505223245 is about 796.4547523360.

The spelling of 505223245 in words is "five hundred five million, two hundred twenty-three thousand, two hundred forty-five".