506025566 has 4 divisors (see below), whose sum is σ = 759038352. Its totient is φ = 253012782.

The previous prime is 506025557. The next prime is 506025631. The reversal of 506025566 is 665520605.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665520605 = 5 ⋅133104121.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126506390 + ... + 126506393.

It is an arithmetic number, because the mean of its divisors is an integer number (189759588).

Almost surely, 2^506025566 is an apocalyptic number.

506025566 is a deficient number, since it is larger than the sum of its proper divisors (253012786).

506025566 is a wasteful number, since it uses less digits than its factorization.

506025566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253012785.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 506025566 is about 22495.0120248912. The cubic root of 506025566 is about 796.8761333235.

The spelling of 506025566 in words is "five hundred six million, twenty-five thousand, five hundred sixty-six".