2006501573 has 4 divisors (see below), whose sum is σ = 2007770688. Its totient is φ = 2005232460.

The previous prime is 2006501537. The next prime is 2006501599. The reversal of 2006501573 is 3751056002.

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 2006501573 - 2⁶ = 2006501509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006501473) 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, 632183 + ... + 635348.

It is an arithmetic number, because the mean of its divisors is an integer number (501942672).

Almost surely, 2^2006501573 is an apocalyptic number.

It is an amenable number.

2006501573 is a deficient number, since it is larger than the sum of its proper divisors (1269115).

2006501573 is a wasteful number, since it uses less digits than its factorization.

2006501573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269114.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 2006501573 is about 44793.9903670124. The cubic root of 2006501573 is about 1261.2848179678.

Adding to 2006501573 its reverse (3751056002), we get a palindrome (5757557575).

The spelling of 2006501573 in words is "two billion, six million, five hundred one thousand, five hundred seventy-three".