20541293 has 2 divisors, whose sum is σ = 20541294. Its totient is φ = 20541292.

The previous prime is 20541259. The next prime is 20541307. The reversal of 20541293 is 39214502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14455204 + 6086089 = 3802^2 + 2467^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20541293 is a prime.

It is a super-2 number, since 2×20541293² = 843889436223698, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20541203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10270646 + 10270647.

It is an arithmetic number, because the mean of its divisors is an integer number (10270647).

Almost surely, 2^20541293 is an apocalyptic number.

It is an amenable number.

20541293 is a deficient number, since it is larger than the sum of its proper divisors (1).

20541293 is an equidigital number, since it uses as much as digits as its factorization.

20541293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20541293 is about 4532.2503240664. The cubic root of 20541293 is about 273.8688211829.

Adding to 20541293 its reverse (39214502), we get a palindrome (59755795).

The spelling of 20541293 in words is "twenty million, five hundred forty-one thousand, two hundred ninety-three".