4573440621 has 12 divisors (see below), whose sum is σ = 6833877180. Its totient is φ = 2943823680.

The previous prime is 4573440617. The next prime is 4573440643. The reversal of 4573440621 is 1260443754.

It can be written as a sum of positive squares in 2 ways, for example, as 3408924996 + 1164515625 = 58386^2 + 34125^2 .

It is not a de Polignac number, because 4573440621 - 2² = 4573440617 is a prime.

It is a super-2 number, since 2×4573440621² = 41832718227625731282, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4573440601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8761120 + ... + 8761641.

It is an arithmetic number, because the mean of its divisors is an integer number (569489765).

Almost surely, 2^4573440621 is an apocalyptic number.

It is an amenable number.

4573440621 is a deficient number, since it is larger than the sum of its proper divisors (2260436559).

4573440621 is a wasteful number, since it uses less digits than its factorization.

4573440621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17522796 (or 17522793 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 4573440621 is about 67627.2180486526. The cubic root of 4573440621 is about 1659.8965219525.

The spelling of 4573440621 in words is "four billion, five hundred seventy-three million, four hundred forty thousand, six hundred twenty-one".