523040047 has 4 divisors (see below), whose sum is σ = 531614536. Its totient is φ = 514465560.

The previous prime is 523040041. The next prime is 523040057. The reversal of 523040047 is 740040325.

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 523040047 - 2⁷ = 523039919 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 (523040041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4287153 + ... + 4287274.

It is an arithmetic number, because the mean of its divisors is an integer number (132903634).

Almost surely, 2^523040047 is an apocalyptic number.

523040047 is a deficient number, since it is larger than the sum of its proper divisors (8574489).

523040047 is an equidigital number, since it uses as much as digits as its factorization.

523040047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8574488.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 523040047 is about 22870.0688018204. The cubic root of 523040047 is about 805.7091840789.

The spelling of 523040047 in words is "five hundred twenty-three million, forty thousand, forty-seven".