2159001 has 16 divisors (see below), whose sum is σ = 3445120. Its totient is φ = 1328400.

The previous prime is 2158999. The next prime is 2159023. The reversal of 2159001 is 1009512.

It is not a de Polignac number, because 2159001 - 2¹ = 2158999 is a prime.

It is a super-2 number, since 2×2159001² = 9322570636002, which contains 22 as substring.

It is a Duffinian number.

2159001 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2159041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2725 + ... + 3426.

It is an arithmetic number, because the mean of its divisors is an integer number (215320).

2^2159001 is an apocalyptic number.

It is an amenable number.

2159001 is a deficient number, since it is larger than the sum of its proper divisors (1286119).

2159001 is a wasteful number, since it uses less digits than its factorization.

2159001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6173 (or 6167 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 2159001 is about 1469.3539396619. The cubic root of 2159001 is about 129.2461498079.

It can be divided in two parts, 215 and 9001, that added together give a square (9216 = 96²).

The spelling of 2159001 in words is "two million, one hundred fifty-nine thousand, one".