473530621 has 2 divisors, whose sum is σ = 473530622. Its totient is φ = 473530620.

The previous prime is 473530613. The next prime is 473530639. The reversal of 473530621 is 126035374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 277222500 + 196308121 = 16650^2 + 14011^2 .

It is a cyclic number.

It is not a de Polignac number, because 473530621 - 2³ = 473530613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473530721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236765310 + 236765311.

It is an arithmetic number, because the mean of its divisors is an integer number (236765311).

Almost surely, 2^473530621 is an apocalyptic number.

It is an amenable number.

473530621 is a deficient number, since it is larger than the sum of its proper divisors (1).

473530621 is an equidigital number, since it uses as much as digits as its factorization.

473530621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 473530621 is about 21760.7587413675. The cubic root of 473530621 is about 779.4399996442.

Adding to 473530621 its reverse (126035374), we get a palindrome (599565995).

It can be divided in two parts, 4 and 73530621, that added together give a square (73530625 = 8575²).

The spelling of 473530621 in words is "four hundred seventy-three million, five hundred thirty thousand, six hundred twenty-one".