2423521 has 2 divisors, whose sum is σ = 2423522. Its totient is φ = 2423520.

The previous prime is 2423497. The next prime is 2423539. The reversal of 2423521 is 1253242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 746496 = 1295^2 + 864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2423521 - 2⁵ = 2423489 is a prime.

It is a d-powerful number, because it can be written as 2 + 4⁹ + 2¹¹ + 3¹⁰ + 5⁵ + 2²¹ + 1 .

It is not a weakly prime, because it can be changed into another prime (2423581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1211760 + 1211761.

It is an arithmetic number, because the mean of its divisors is an integer number (1211761).

2^2423521 is an apocalyptic number.

It is an amenable number.

2423521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2423521 is an equidigital number, since it uses as much as digits as its factorization.

2423521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 19.

The square root of 2423521 is about 1556.7661995303. The cubic root of 2423521 is about 134.3225503614.

Adding to 2423521 its reverse (1253242), we get a palindrome (3676763).

The spelling of 2423521 in words is "two million, four hundred twenty-three thousand, five hundred twenty-one".