20253541 has 16 divisors (see below), whose sum is σ = 25937280. Its totient is φ = 15353280.

The previous prime is 20253539. The next prime is 20253553. The reversal of 20253541 is 14535202.

It is a cyclic number.

It is not a de Polignac number, because 20253541 - 2¹ = 20253539 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 (20253521) 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, 706 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (1621080).

Almost surely, 2^20253541 is an apocalyptic number.

It is an amenable number.

20253541 is a deficient number, since it is larger than the sum of its proper divisors (5683739).

20253541 is a wasteful number, since it uses less digits than its factorization.

20253541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7164.

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

The square root of 20253541 is about 4500.3934272461. The cubic root of 20253541 is about 272.5839754656.

Adding to 20253541 its reverse (14535202), we get a palindrome (34788743).

The spelling of 20253541 in words is "twenty million, two hundred fifty-three thousand, five hundred forty-one".