2149001 has 4 divisors (see below), whose sum is σ = 2160000. Its totient is φ = 2138004.

The previous prime is 2148989. The next prime is 2149003. The reversal of 2149001 is 1009412.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2149001 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2149003) 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, 5201 + ... + 5598.

It is an arithmetic number, because the mean of its divisors is an integer number (540000).

2^2149001 is an apocalyptic number.

It is an amenable number.

2149001 is a deficient number, since it is larger than the sum of its proper divisors (10999).

2149001 is a wasteful number, since it uses less digits than its factorization.

2149001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10998.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2149001 is about 1465.9471341082. The cubic root of 2149001 is about 129.0462947035.

The spelling of 2149001 in words is "two million, one hundred forty-nine thousand, one".