2158201 has 8 divisors (see below), whose sum is σ = 2315520. Its totient is φ = 2004288.

The previous prime is 2158183. The next prime is 2158223. The reversal of 2158201 is 1028512.

2158201 = T₁₁₉₈ + T₁₁₉₉ + T₁₂₀₀.

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 2158201 - 2⁷ = 2158073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2158231) 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, 540 + ... + 2146.

It is an arithmetic number, because the mean of its divisors is an integer number (289440).

2^2158201 is an apocalyptic number.

2158201 is the 1200-th centered triangular number.

It is an amenable number.

2158201 is a deficient number, since it is larger than the sum of its proper divisors (157319).

2158201 is a wasteful number, since it uses less digits than its factorization.

2158201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2158201 is about 1469.0816859521. The cubic root of 2158201 is about 129.2301841378.

It can be divided in two parts, 21 and 58201, that multiplied together give a palindrome (1222221).

The spelling of 2158201 in words is "two million, one hundred fifty-eight thousand, two hundred one".