20534411 has 4 divisors (see below), whose sum is σ = 20737824. Its totient is φ = 20331000.

The previous prime is 20534387. The next prime is 20534413. The reversal of 20534411 is 11443502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20534411 - 2¹⁴ = 20518027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20534413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101555 + ... + 101756.

It is an arithmetic number, because the mean of its divisors is an integer number (5184456).

Almost surely, 2^20534411 is an apocalyptic number.

20534411 is a deficient number, since it is larger than the sum of its proper divisors (203413).

20534411 is a wasteful number, since it uses less digits than its factorization.

20534411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203412.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20534411 is about 4531.4910349685. The cubic root of 20534411 is about 273.8382327846.

Adding to 20534411 its reverse (11443502), we get a palindrome (31977913).

Subtracting from 20534411 its reverse (11443502), we obtain a palindrome (9090909).

The spelling of 20534411 in words is "twenty million, five hundred thirty-four thousand, four hundred eleven".