20612541 has 4 divisors (see below), whose sum is σ = 27483392. Its totient is φ = 13741692.

The previous prime is 20612539. The next prime is 20612561. The reversal of 20612541 is 14521602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20612541 - 2¹ = 20612539 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612521) 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, 3435421 + ... + 3435426.

It is an arithmetic number, because the mean of its divisors is an integer number (6870848).

Almost surely, 2^20612541 is an apocalyptic number.

It is an amenable number.

20612541 is a deficient number, since it is larger than the sum of its proper divisors (6870851).

20612541 is an equidigital number, since it uses as much as digits as its factorization.

20612541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870850.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20612541 is about 4540.1036331784. The cubic root of 20612541 is about 274.1850961313.

The spelling of 20612541 in words is "twenty million, six hundred twelve thousand, five hundred forty-one".