505115423 has 4 divisors (see below), whose sum is σ = 505162368. Its totient is φ = 505068480.

The previous prime is 505115419. The next prime is 505115447. The reversal of 505115423 is 324511505.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 505115423 - 2² = 505115419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 505115392 and 505115401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505115473) 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, 1583 + ... + 31823.

It is an arithmetic number, because the mean of its divisors is an integer number (126290592).

Almost surely, 2^505115423 is an apocalyptic number.

505115423 is a deficient number, since it is larger than the sum of its proper divisors (46945).

505115423 is a wasteful number, since it uses less digits than its factorization.

505115423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46944.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 505115423 is about 22474.7730355614. The cubic root of 505115423 is about 796.3980899562.

Adding to 505115423 its reverse (324511505), we get a palindrome (829626928).

The spelling of 505115423 in words is "five hundred five million, one hundred fifteen thousand, four hundred twenty-three".