20272529 has 2 divisors, whose sum is σ = 20272530. Its totient is φ = 20272528.

The previous prime is 20272489. The next prime is 20272547. The reversal of 20272529 is 92527202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14047504 + 6225025 = 3748^2 + 2495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20272529 is a prime.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 20272529 parts by 6367 straight cuts.

It is not a weakly prime, because it can be changed into another prime (20272589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10136264 + 10136265.

It is an arithmetic number, because the mean of its divisors is an integer number (10136265).

Almost surely, 2^20272529 is an apocalyptic number.

It is an amenable number.

20272529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20272529 is an equidigital number, since it uses as much as digits as its factorization.

20272529 is an evil number, because the sum of its binary digits is even.

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

The square root of 20272529 is about 4502.5025263735. The cubic root of 20272529 is about 272.6691327211.

The spelling of 20272529 in words is "twenty million, two hundred seventy-two thousand, five hundred twenty-nine".