20452049 has 2 divisors, whose sum is σ = 20452050. Its totient is φ = 20452048.

The previous prime is 20452039. The next prime is 20452051. The reversal of 20452049 is 94025402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 2347024 = 4255^2 + 1532^2 .

It is a cyclic number.

It is not a de Polignac number, because 20452049 - 2¹² = 20447953 is a prime.

Together with 20452051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20452039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10226024 + 10226025.

It is an arithmetic number, because the mean of its divisors is an integer number (10226025).

Almost surely, 2^20452049 is an apocalyptic number.

It is an amenable number.

20452049 is a deficient number, since it is larger than the sum of its proper divisors (1).

20452049 is an equidigital number, since it uses as much as digits as its factorization.

20452049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 20452049 is about 4522.3941668103. The cubic root of 20452049 is about 273.4716272550.

The spelling of 20452049 in words is "twenty million, four hundred fifty-two thousand, forty-nine".