472251643 has 4 divisors (see below), whose sum is σ = 472306408. Its totient is φ = 472196880.

The previous prime is 472251607. The next prime is 472251649. The reversal of 472251643 is 346152274.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 472251643 - 2²⁵ = 438697211 is a prime.

It is a super-2 number, since 2×472251643² = 446043228632398898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 472251599 and 472251608.

It is not an unprimeable number, because it can be changed into a prime (472251649) 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, 11298 + ... + 32743.

It is an arithmetic number, because the mean of its divisors is an integer number (118076602).

Almost surely, 2^472251643 is an apocalyptic number.

472251643 is a deficient number, since it is larger than the sum of its proper divisors (54765).

472251643 is a wasteful number, since it uses less digits than its factorization.

472251643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54764.

The product of its digits is 40320, while the sum is 34.

The square root of 472251643 is about 21731.3516146603. The cubic root of 472251643 is about 778.7376265718.

It can be divided in two parts, 4722 and 51643, that added together give a palindrome (56365).

The spelling of 472251643 in words is "four hundred seventy-two million, two hundred fifty-one thousand, six hundred forty-three".