20553241 has 16 divisors (see below), whose sum is σ = 22063104. Its totient is φ = 19116864.

The previous prime is 20553227. The next prime is 20553251. The reversal of 20553241 is 14235502.

It is a de Polignac number, because none of the positive numbers 2^k-20553241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20553251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92056 + ... + 92278.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^20553241 is an apocalyptic number.

It is an amenable number.

20553241 is a deficient number, since it is larger than the sum of its proper divisors (1509863).

20553241 is a wasteful number, since it uses less digits than its factorization.

20553241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

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

The square root of 20553241 is about 4533.5682414628. The cubic root of 20553241 is about 273.9219101884.

Adding to 20553241 its reverse (14235502), we get a palindrome (34788743).

The spelling of 20553241 in words is "twenty million, five hundred fifty-three thousand, two hundred forty-one".