2253521 has 2 divisors, whose sum is σ = 2253522. Its totient is φ = 2253520.

The previous prime is 2253499. The next prime is 2253539. The reversal of 2253521 is 1253522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 18496 = 1495^2 + 136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2253521 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2253493 and 2253502.

It is not a weakly prime, because it can be changed into another prime (2253551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126760 + 1126761.

It is an arithmetic number, because the mean of its divisors is an integer number (1126761).

2^2253521 is an apocalyptic number.

It is an amenable number.

2253521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2253521 is an equidigital number, since it uses as much as digits as its factorization.

2253521 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2253521 is about 1501.1732078611. The cubic root of 2253521 is about 131.1053869047.

Subtracting from 2253521 its reverse (1253522), we obtain a palindrome (999999).

The spelling of 2253521 in words is "two million, two hundred fifty-three thousand, five hundred twenty-one".