504233661 has 4 divisors (see below), whose sum is σ = 672311552. Its totient is φ = 336155772.

The previous prime is 504233659. The next prime is 504233677. The reversal of 504233661 is 166332405.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 504233661 - 2¹ = 504233659 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504233161) 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, 84038941 + ... + 84038946.

It is an arithmetic number, because the mean of its divisors is an integer number (168077888).

Almost surely, 2^504233661 is an apocalyptic number.

It is an amenable number.

504233661 is a deficient number, since it is larger than the sum of its proper divisors (168077891).

504233661 is a wasteful number, since it uses less digits than its factorization.

504233661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168077890.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 504233661 is about 22455.1477617049. The cubic root of 504233661 is about 795.9344054472.

The spelling of 504233661 in words is "five hundred four million, two hundred thirty-three thousand, six hundred sixty-one".