505440523 has 16 divisors (see below), whose sum is σ = 603002880. Its totient is φ = 414532800.

The previous prime is 505440517. The next prime is 505440541. The reversal of 505440523 is 325044505.

It is a cyclic number.

It is not a de Polignac number, because 505440523 - 2⁹ = 505440011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505440491 and 505440500.

It is not an unprimeable number, because it can be changed into a prime (505441523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6228 + ... + 32398.

It is an arithmetic number, because the mean of its divisors is an integer number (37687680).

Almost surely, 2^505440523 is an apocalyptic number.

505440523 is a deficient number, since it is larger than the sum of its proper divisors (97562357).

505440523 is a wasteful number, since it uses less digits than its factorization.

505440523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26298.

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

The square root of 505440523 is about 22482.0044257624. The cubic root of 505440523 is about 796.5689113046.

The spelling of 505440523 in words is "five hundred five million, four hundred forty thousand, five hundred twenty-three".