20527229 has 4 divisors (see below), whose sum is σ = 20576640. Its totient is φ = 20477820.

The previous prime is 20527223. The next prime is 20527249. The reversal of 20527229 is 92272502.

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 a cyclic number.

It is not a de Polignac number, because 20527229 - 2²⁰ = 19478653 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 (20527223) 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, 24077 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (5144160).

Almost surely, 2^20527229 is an apocalyptic number.

It is an amenable number.

20527229 is a deficient number, since it is larger than the sum of its proper divisors (49411).

20527229 is an equidigital number, since it uses as much as digits as its factorization.

20527229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49410.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 20527229 is about 4530.6985112673. The cubic root of 20527229 is about 273.8063036890.

The spelling of 20527229 in words is "twenty million, five hundred twenty-seven thousand, two hundred twenty-nine".