2421553 has 2 divisors, whose sum is σ = 2421554. Its totient is φ = 2421552.

The previous prime is 2421547. The next prime is 2421577. The reversal of 2421553 is 3551242.

2421553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2347024 + 74529 = 1532^2 + 273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2421553 is a prime.

2421553 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2421533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210776 + 1210777.

It is an arithmetic number, because the mean of its divisors is an integer number (1210777).

2^2421553 is an apocalyptic number.

It is an amenable number.

2421553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421553 is an equidigital number, since it uses as much as digits as its factorization.

2421553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 22.

The square root of 2421553 is about 1556.1339916601. The cubic root of 2421553 is about 134.2861820135.

Adding to 2421553 its reverse (3551242), we get a palindrome (5972795).

The spelling of 2421553 in words is "two million, four hundred twenty-one thousand, five hundred fifty-three".