20522135 has 4 divisors (see below), whose sum is σ = 24626568. Its totient is φ = 16417704.

The previous prime is 20522119. The next prime is 20522143. The reversal of 20522135 is 53122502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20522135 - 2⁴ = 20522119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2052209 + ... + 2052218.

It is an arithmetic number, because the mean of its divisors is an integer number (6156642).

Almost surely, 2^20522135 is an apocalyptic number.

20522135 is a deficient number, since it is larger than the sum of its proper divisors (4104433).

20522135 is an equidigital number, since it uses as much as digits as its factorization.

20522135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104432.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20522135 is about 4530.1363114149. The cubic root of 20522135 is about 273.7836527229.

Adding to 20522135 its reverse (53122502), we get a palindrome (73644637).

The spelling of 20522135 in words is "twenty million, five hundred twenty-two thousand, one hundred thirty-five".