4520644001 has 4 divisors (see below), whose sum is σ = 4521462192. Its totient is φ = 4519825812.

The previous prime is 4520643991. The next prime is 4520644003. The reversal of 4520644001 is 1004460254.

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 a de Polignac number, because none of the positive numbers 2^k-4520644001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4520644003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400751 + ... + 411876.

It is an arithmetic number, because the mean of its divisors is an integer number (1130365548).

Almost surely, 2^4520644001 is an apocalyptic number.

It is an amenable number.

4520644001 is a deficient number, since it is larger than the sum of its proper divisors (818191).

4520644001 is an equidigital number, since it uses as much as digits as its factorization.

4520644001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818190.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 4520644001 is about 67235.7345538814. The cubic root of 4520644001 is about 1653.4844028689.

The spelling of 4520644001 in words is "four billion, five hundred twenty million, six hundred forty-four thousand, one".