2149801 has 4 divisors (see below), whose sum is σ = 2163652. Its totient is φ = 2135952.

The previous prime is 2149789. The next prime is 2149813. The reversal of 2149801 is 1089412.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2149789) and next prime (2149813).

It can be written as a sum of positive squares in 2 ways, for example, as 1625625 + 524176 = 1275^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149801 - 2⁹ = 2149289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149501) 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, 6690 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (540913).

2^2149801 is an apocalyptic number.

It is an amenable number.

2149801 is a deficient number, since it is larger than the sum of its proper divisors (13851).

2149801 is a wasteful number, since it uses less digits than its factorization.

2149801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13850.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2149801 is about 1466.2199698545. The cubic root of 2149801 is about 129.0623058994.

The spelling of 2149801 in words is "two million, one hundred forty-nine thousand, eight hundred one".