506418791 has 4 divisors (see below), whose sum is σ = 506510784. Its totient is φ = 506326800.

The previous prime is 506418733. The next prime is 506418823. The reversal of 506418791 is 197814605.

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 506418791 - 2⁶ = 506418727 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 (506418701) 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, 37175 + ... + 48936.

It is an arithmetic number, because the mean of its divisors is an integer number (126627696).

Almost surely, 2^506418791 is an apocalyptic number.

506418791 is a deficient number, since it is larger than the sum of its proper divisors (91993).

506418791 is an equidigital number, since it uses as much as digits as its factorization.

506418791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91992.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 506418791 is about 22503.7505985114. The cubic root of 506418791 is about 797.0824934409.

The spelling of 506418791 in words is "five hundred six million, four hundred eighteen thousand, seven hundred ninety-one".