20541253 has 16 divisors (see below), whose sum is σ = 22613040. Its totient is φ = 18643968.

The previous prime is 20541233. The next prime is 20541259. The reversal of 20541253 is 35214502.

It can be written as a sum of positive squares in 8 ways, for example, as 47524 + 20493729 = 218^2 + 4527^2 .

It is not a de Polignac number, because 20541253 - 2⁵ = 20541221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20541259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181725 + ... + 181837.

It is an arithmetic number, because the mean of its divisors is an integer number (1413315).

Almost surely, 2^20541253 is an apocalyptic number.

It is an amenable number.

20541253 is a deficient number, since it is larger than the sum of its proper divisors (2071787).

20541253 is an equidigital number, since it uses as much as digits as its factorization.

20541253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 167 counting only the distinct ones).

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

The square root of 20541253 is about 4532.2459112453. The cubic root of 20541253 is about 273.8686434148.

Adding to 20541253 its reverse (35214502), we get a palindrome (55755755).

The spelling of 20541253 in words is "twenty million, five hundred forty-one thousand, two hundred fifty-three".