20527205 has 8 divisors (see below), whose sum is σ = 24662904. Its totient is φ = 16401600.

The previous prime is 20527189. The next prime is 20527217. The reversal of 20527205 is 50272502.

It can be written as a sum of positive squares in 4 ways, for example, as 178084 + 20349121 = 422^2 + 4511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20527205 - 2⁴ = 20527189 is a prime.

It is a super-2 number, since 2×20527205² = 842732290224050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3095 + ... + 7115.

It is an arithmetic number, because the mean of its divisors is an integer number (3082863).

Almost surely, 2^20527205 is an apocalyptic number.

It is an amenable number.

20527205 is a deficient number, since it is larger than the sum of its proper divisors (4135699).

20527205 is a wasteful number, since it uses less digits than its factorization.

20527205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 20527205 is about 4530.6958626683. The cubic root of 20527205 is about 273.8061969794.

Adding to 20527205 its reverse (50272502), we get a palindrome (70799707).

The spelling of 20527205 in words is "twenty million, five hundred twenty-seven thousand, two hundred five".