20454541 has 16 divisors (see below), whose sum is σ = 22176000. Its totient is φ = 18825408.

The previous prime is 20454529. The next prime is 20454547. The reversal of 20454541 is 14545402.

It is a happy number.

It is not a de Polignac number, because 20454541 - 2⁹ = 20454029 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 (20454547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58435 + ... + 58783.

It is an arithmetic number, because the mean of its divisors is an integer number (1386000).

Almost surely, 2^20454541 is an apocalyptic number.

It is an amenable number.

20454541 is a deficient number, since it is larger than the sum of its proper divisors (1721459).

20454541 is a wasteful number, since it uses less digits than its factorization.

20454541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 20454541 is about 4522.6696761979. The cubic root of 20454541 is about 273.4827339436.

Adding to 20454541 its reverse (14545402), we get a palindrome (34999943).

It can be divided in two parts, 204 and 54541, that added together give a palindrome (54745).

The spelling of 20454541 in words is "twenty million, four hundred fifty-four thousand, five hundred forty-one".