472559681 has 4 divisors (see below), whose sum is σ = 515519664. Its totient is φ = 429599700.

The previous prime is 472559677. The next prime is 472559701. The reversal of 472559681 is 186955274.

It is a happy number.

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 472559681 - 2² = 472559677 is a prime.

It is a super-2 number, since 2×472559681² = 446625304213643522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (472559281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21479975 + ... + 21479996.

It is an arithmetic number, because the mean of its divisors is an integer number (128879916).

Almost surely, 2^472559681 is an apocalyptic number.

It is an amenable number.

472559681 is a deficient number, since it is larger than the sum of its proper divisors (42959983).

472559681 is a wasteful number, since it uses less digits than its factorization.

472559681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42959982.

The product of its digits is 604800, while the sum is 47.

The square root of 472559681 is about 21738.4378693594. The cubic root of 472559681 is about 778.9069068326.

The spelling of 472559681 in words is "four hundred seventy-two million, five hundred fifty-nine thousand, six hundred eighty-one".