20411541 has 16 divisors (see below), whose sum is σ = 30944320. Its totient is φ = 13290480.

The previous prime is 20411539. The next prime is 20411579. The reversal of 20411541 is 14511402.

It is not a de Polignac number, because 20411541 - 2¹ = 20411539 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 (20411591) 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, 7630 + ... + 9951.

It is an arithmetic number, because the mean of its divisors is an integer number (1934020).

Almost surely, 2^20411541 is an apocalyptic number.

It is an amenable number.

20411541 is a deficient number, since it is larger than the sum of its proper divisors (10532779).

20411541 is a wasteful number, since it uses less digits than its factorization.

20411541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17633 (or 17627 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 20411541 is about 4517.9133457825. The cubic root of 20411541 is about 273.2909589609.

Adding to 20411541 its reverse (14511402), we get a palindrome (34922943).

The spelling of 20411541 in words is "twenty million, four hundred eleven thousand, five hundred forty-one".