505223445523 has 8 divisors (see below), whose sum is σ = 507545305200. Its totient is φ = 502906618368.

The previous prime is 505223445449. The next prime is 505223445527. The reversal of 505223445523 is 325544322505.

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 505223445523 - 2²¹ = 505221348371 is a prime.

It is a super-2 number, since 2×505223445523² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505223445527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056813 + ... + 1458526.

It is an arithmetic number, because the mean of its divisors is an integer number (63443163150).

Almost surely, 2^505223445523 is an apocalyptic number.

505223445523 is a deficient number, since it is larger than the sum of its proper divisors (2321859677).

505223445523 is a wasteful number, since it uses less digits than its factorization.

505223445523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516261.

The product of its (nonzero) digits is 720000, while the sum is 40.

The spelling of 505223445523 in words is "five hundred five billion, two hundred twenty-three million, four hundred forty-five thousand, five hundred twenty-three".