2248621 has 4 divisors (see below), whose sum is σ = 2296512. Its totient is φ = 2200732.

The previous prime is 2248591. The next prime is 2248633. The reversal of 2248621 is 1268422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1268422 = 2 ⋅634211.

It is a cyclic number.

It is not a de Polignac number, because 2248621 - 2¹⁵ = 2215853 is a prime.

It is an Ulam number.

It is a Duffinian number.

2248621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2248651) 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, 23875 + ... + 23968.

It is an arithmetic number, because the mean of its divisors is an integer number (574128).

2^2248621 is an apocalyptic number.

It is an amenable number.

2248621 is a deficient number, since it is larger than the sum of its proper divisors (47891).

2248621 is an equidigital number, since it uses as much as digits as its factorization.

2248621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47890.

The product of its digits is 1536, while the sum is 25.

The square root of 2248621 is about 1499.5402628806. The cubic root of 2248621 is about 131.0102938515.

The spelling of 2248621 in words is "two million, two hundred forty-eight thousand, six hundred twenty-one".