2248921 has 4 divisors (see below), whose sum is σ = 2326500. Its totient is φ = 2171344.

The previous prime is 2248919. The next prime is 2248927. The reversal of 2248921 is 1298422.

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 698896 + 1550025 = 836^2 + 1245^2 .

It is a cyclic number.

It is not a de Polignac number, because 2248921 - 2¹ = 2248919 is a prime.

It is a Duffinian number.

2248921 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2248921.

It is not an unprimeable number, because it can be changed into a prime (2248927) 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, 38746 + ... + 38803.

It is an arithmetic number, because the mean of its divisors is an integer number (581625).

2^2248921 is an apocalyptic number.

It is an amenable number.

2248921 is a deficient number, since it is larger than the sum of its proper divisors (77579).

2248921 is an equidigital number, since it uses as much as digits as its factorization.

2248921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77578.

The product of its digits is 2304, while the sum is 28.

The square root of 2248921 is about 1499.6402902030. The cubic root of 2248921 is about 131.0161198430.

The spelling of 2248921 in words is "two million, two hundred forty-eight thousand, nine hundred twenty-one".