20411545 has 16 divisors (see below), whose sum is σ = 30538368. Its totient is φ = 12723840.

The previous prime is 20411539. The next prime is 20411579. The reversal of 20411545 is 54511402.

It is not a de Polignac number, because 20411545 - 2⁵ = 20411513 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26124 + ... + 26893.

It is an arithmetic number, because the mean of its divisors is an integer number (1908648).

Almost surely, 2^20411545 is an apocalyptic number.

It is an amenable number.

20411545 is a deficient number, since it is larger than the sum of its proper divisors (10126823).

20411545 is a wasteful number, since it uses less digits than its factorization.

20411545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53040.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 20411545 is about 4517.9137884648. The cubic root of 20411545 is about 273.2909768129.

Adding to 20411545 its reverse (54511402), we get a palindrome (74922947).

The spelling of 20411545 in words is "twenty million, four hundred eleven thousand, five hundred forty-five".