505055423 has 4 divisors (see below), whose sum is σ = 507067848. Its totient is φ = 503043000.

The previous prime is 505055407. The next prime is 505055437. The reversal of 505055423 is 324550505.

It is a happy number.

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 505055423 - 2⁴ = 505055407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505055723) 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, 1005836 + ... + 1006337.

It is an arithmetic number, because the mean of its divisors is an integer number (126766962).

Almost surely, 2^505055423 is an apocalyptic number.

505055423 is a deficient number, since it is larger than the sum of its proper divisors (2012425).

505055423 is a wasteful number, since it uses less digits than its factorization.

505055423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012424.

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 505055423 is about 22473.4381659772. The cubic root of 505055423 is about 796.3665553965.

The spelling of 505055423 in words is "five hundred five million, fifty-five thousand, four hundred twenty-three".