20210541 has 12 divisors (see below), whose sum is σ = 29180448. Its totient is φ = 12436944.

The previous prime is 20210539. The next prime is 20210551. The reversal of 20210541 is 14501202.

It is not a de Polignac number, because 20210541 - 2¹ = 20210539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20210541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19425 + ... + 20438.

It is an arithmetic number, because the mean of its divisors is an integer number (2431704).

Almost surely, 2^20210541 is an apocalyptic number.

It is an amenable number.

20210541 is a deficient number, since it is larger than the sum of its proper divisors (8969907).

20210541 is a wasteful number, since it uses less digits than its factorization.

20210541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39892 (or 39879 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20210541 is about 4495.6135287633. The cubic root of 20210541 is about 272.3909324200.

Adding to 20210541 its reverse (14501202), we get a palindrome (34711743).

It can be divided in two parts, 2021054 and 1, that added together give a triangular number (2021055 = T₂₀₁₀).

The spelling of 20210541 in words is "twenty million, two hundred ten thousand, five hundred forty-one".