20532207 has 4 divisors (see below), whose sum is σ = 27376280. Its totient is φ = 13688136.

The previous prime is 20532191. The next prime is 20532227. The reversal of 20532207 is 70223502.

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

It is not a de Polignac number, because 20532207 - 2⁴ = 20532191 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 (20532227) 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, 3422032 + ... + 3422037.

It is an arithmetic number, because the mean of its divisors is an integer number (6844070).

Almost surely, 2^20532207 is an apocalyptic number.

20532207 is a deficient number, since it is larger than the sum of its proper divisors (6844073).

20532207 is an equidigital number, since it uses as much as digits as its factorization.

20532207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6844072.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 20532207 is about 4531.2478413788. The cubic root of 20532207 is about 273.8284352297.

Adding to 20532207 its reverse (70223502), we get a palindrome (90755709).

The spelling of 20532207 in words is "twenty million, five hundred thirty-two thousand, two hundred seven".