472752721 has 4 divisors (see below), whose sum is σ = 540288832. Its totient is φ = 405216612.

The previous prime is 472752703. The next prime is 472752767. The reversal of 472752721 is 127257274.

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 472752721 - 2⁵ = 472752689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472752521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33768045 + ... + 33768058.

It is an arithmetic number, because the mean of its divisors is an integer number (135072208).

Almost surely, 2^472752721 is an apocalyptic number.

It is an amenable number.

472752721 is a deficient number, since it is larger than the sum of its proper divisors (67536111).

472752721 is an equidigital number, since it uses as much as digits as its factorization.

472752721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67536110.

The product of its digits is 54880, while the sum is 37.

The square root of 472752721 is about 21742.8774774637. The cubic root of 472752721 is about 779.0129532051.

The spelling of 472752721 in words is "four hundred seventy-two million, seven hundred fifty-two thousand, seven hundred twenty-one".