2145205001 has 8 divisors (see below), whose sum is σ = 2163369600. Its totient is φ = 2127090928.

The previous prime is 2145204989. The next prime is 2145205019. The reversal of 2145205001 is 1005025412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2145205001 - 2¹⁸ = 2144942857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145205031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75200 + ... + 99726.

It is an arithmetic number, because the mean of its divisors is an integer number (270421200).

Almost surely, 2^2145205001 is an apocalyptic number.

It is an amenable number.

2145205001 is a deficient number, since it is larger than the sum of its proper divisors (18164599).

2145205001 is a wasteful number, since it uses less digits than its factorization.

2145205001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25263.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2145205001 is about 46316.3578123324. The cubic root of 2145205001 is about 1289.7026738993.

The spelling of 2145205001 in words is "two billion, one hundred forty-five million, two hundred five thousand, one".