2005323501 has 4 divisors (see below), whose sum is σ = 2673764672. Its totient is φ = 1336882332.

The previous prime is 2005323497. The next prime is 2005323569. The reversal of 2005323501 is 1053235002.

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 not a de Polignac number, because 2005323501 - 2² = 2005323497 is a prime.

It is a super-3 number, since 3×2005323501³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005323101) 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, 334220581 + ... + 334220586.

It is an arithmetic number, because the mean of its divisors is an integer number (668441168).

Almost surely, 2^2005323501 is an apocalyptic number.

It is an amenable number.

2005323501 is a deficient number, since it is larger than the sum of its proper divisors (668441171).

2005323501 is an equidigital number, since it uses as much as digits as its factorization.

2005323501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668441170.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 2005323501 is about 44780.8385473073. The cubic root of 2005323501 is about 1261.0379246944.

Adding to 2005323501 its reverse (1053235002), we get a palindrome (3058558503).

The spelling of 2005323501 in words is "two billion, five million, three hundred twenty-three thousand, five hundred one".