2158272001 has 4 divisors (see below), whose sum is σ = 2158429252. Its totient is φ = 2158114752.

The previous prime is 2158271977. The next prime is 2158272013. The reversal of 2158272001 is 1002728512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 959450625 + 1198821376 = 30975^2 + 34624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158272001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158272031) 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, 55836 + ... + 86221.

It is an arithmetic number, because the mean of its divisors is an integer number (539607313).

Almost surely, 2^2158272001 is an apocalyptic number.

It is an amenable number.

2158272001 is a deficient number, since it is larger than the sum of its proper divisors (157251).

2158272001 is a wasteful number, since it uses less digits than its factorization.

2158272001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157250.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 2158272001 is about 46457.2061256378. The cubic root of 2158272001 is about 1292.3160127049.

The spelling of 2158272001 in words is "two billion, one hundred fifty-eight million, two hundred seventy-two thousand, one".