20452529 has 4 divisors (see below), whose sum is σ = 21112320. Its totient is φ = 19792740.

The previous prime is 20452519. The next prime is 20452559. The reversal of 20452529 is 92525402.

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 20452529 - 2⁸ = 20452273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20452519) 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, 329849 + ... + 329910.

It is an arithmetic number, because the mean of its divisors is an integer number (5278080).

Almost surely, 2^20452529 is an apocalyptic number.

It is an amenable number.

20452529 is a deficient number, since it is larger than the sum of its proper divisors (659791).

20452529 is an equidigital number, since it uses as much as digits as its factorization.

20452529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659790.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 20452529 is about 4522.4472357342. The cubic root of 20452529 is about 273.4737666552.

The spelling of 20452529 in words is "twenty million, four hundred fifty-two thousand, five hundred twenty-nine".