2235521 has 4 divisors (see below), whose sum is σ = 2353200. Its totient is φ = 2117844.

The previous prime is 2235511. The next prime is 2235539. The reversal of 2235521 is 1255322.

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: 1255322 = 2 ⋅627661.

It is a cyclic number.

It is not a de Polignac number, because 2235521 - 2¹⁴ = 2219137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2235493 and 2235502.

It is not an unprimeable number, because it can be changed into a prime (2235511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58811 + ... + 58848.

It is an arithmetic number, because the mean of its divisors is an integer number (588300).

2^2235521 is an apocalyptic number.

It is an amenable number.

2235521 is a deficient number, since it is larger than the sum of its proper divisors (117679).

2235521 is a wasteful number, since it uses less digits than its factorization.

2235521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117678.

The product of its digits is 600, while the sum is 20.

The square root of 2235521 is about 1495.1658770852. The cubic root of 2235521 is about 130.7553852522.

The spelling of 2235521 in words is "two million, two hundred thirty-five thousand, five hundred twenty-one".