2149601 has 4 divisors (see below), whose sum is σ = 2154672. Its totient is φ = 2144532.

The previous prime is 2149591. The next prime is 2149607. The reversal of 2149601 is 1069412.

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 not a de Polignac number, because 2149601 - 2¹⁴ = 2133217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2149607) 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, 1835 + ... + 2768.

It is an arithmetic number, because the mean of its divisors is an integer number (538668).

2^2149601 is an apocalyptic number.

It is an amenable number.

2149601 is a deficient number, since it is larger than the sum of its proper divisors (5071).

2149601 is an equidigital number, since it uses as much as digits as its factorization.

2149601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2149601 is about 1466.1517656778. The cubic root of 2149601 is about 129.0583034728.

The spelling of 2149601 in words is "two million, one hundred forty-nine thousand, six hundred one".