2021249 has 4 divisors (see below), whose sum is σ = 2140164. Its totient is φ = 1902336.

The previous prime is 2021237. The next prime is 2021251. The reversal of 2021249 is 9421202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 1392400 = 793^2 + 1180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021249.

It is not an unprimeable number, because it can be changed into a prime (2021219) 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, 59432 + ... + 59465.

It is an arithmetic number, because the mean of its divisors is an integer number (535041).

2^2021249 is an apocalyptic number.

It is an amenable number.

2021249 is a deficient number, since it is larger than the sum of its proper divisors (118915).

2021249 is a wasteful number, since it uses less digits than its factorization.

2021249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118914.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2021249 is about 1421.7063691213. The cubic root of 2021249 is about 126.4367350700.

The spelling of 2021249 in words is "two million, twenty-one thousand, two hundred forty-nine".