505650523 has 4 divisors (see below), whose sum is σ = 577886320. Its totient is φ = 433414728.

The previous prime is 505650503. The next prime is 505650539. The reversal of 505650523 is 325056505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505650523 - 2⁵ = 505650491 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505650503) 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 in 3 ways as a sum of consecutive naturals, for example, 36117888 + ... + 36117901.

It is an arithmetic number, because the mean of its divisors is an integer number (144471580).

Almost surely, 2^505650523 is an apocalyptic number.

505650523 is a deficient number, since it is larger than the sum of its proper divisors (72235797).

505650523 is an equidigital number, since it uses as much as digits as its factorization.

505650523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72235796.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 505650523 is about 22486.6743428191. The cubic root of 505650523 is about 796.6792152884.

The spelling of 505650523 in words is "five hundred five million, six hundred fifty thousand, five hundred twenty-three".