472575781 has 4 divisors (see below), whose sum is σ = 480585600. Its totient is φ = 464565964.

The previous prime is 472575769. The next prime is 472575821. The reversal of 472575781 is 187575274.

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 a cyclic number.

It is not a de Polignac number, because 472575781 - 2⁹ = 472575269 is a prime.

It is a super-2 number, since 2×472575781² = 446655737575519922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472575721) 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, 4004821 + ... + 4004938.

It is an arithmetic number, because the mean of its divisors is an integer number (120146400).

Almost surely, 2^472575781 is an apocalyptic number.

It is an amenable number.

472575781 is a deficient number, since it is larger than the sum of its proper divisors (8009819).

472575781 is an equidigital number, since it uses as much as digits as its factorization.

472575781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8009818.

The product of its digits is 548800, while the sum is 46.

The square root of 472575781 is about 21738.8081780028. The cubic root of 472575781 is about 778.9157524587.

The spelling of 472575781 in words is "four hundred seventy-two million, five hundred seventy-five thousand, seven hundred eighty-one".