2273521 has 4 divisors (see below), whose sum is σ = 2393200. Its totient is φ = 2153844.

The previous prime is 2273507. The next prime is 2273533. The reversal of 2273521 is 1253722.

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: 1253722 = 2 ⋅626861.

It is a cyclic number.

It is not a de Polignac number, because 2273521 - 2⁵ = 2273489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2273492 and 2273501.

It is not an unprimeable number, because it can be changed into a prime (2273501) 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, 59811 + ... + 59848.

It is an arithmetic number, because the mean of its divisors is an integer number (598300).

2^2273521 is an apocalyptic number.

It is an amenable number.

2273521 is a deficient number, since it is larger than the sum of its proper divisors (119679).

2273521 is a wasteful number, since it uses less digits than its factorization.

2273521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119678.

The product of its digits is 840, while the sum is 22.

The square root of 2273521 is about 1507.8199494635. The cubic root of 2273521 is about 131.4920985870.

The spelling of 2273521 in words is "two million, two hundred seventy-three thousand, five hundred twenty-one".