20454359 has 2 divisors, whose sum is σ = 20454360. Its totient is φ = 20454358.

The previous prime is 20454347. The next prime is 20454361. The reversal of 20454359 is 95345402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20454359 - 2⁸ = 20454103 is a prime.

It is a super-3 number, since 3×20454359³ (a number of 23 digits) contains 333 as substring.

Together with 20454361, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20454059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227179 + 10227180.

It is an arithmetic number, because the mean of its divisors is an integer number (10227180).

Almost surely, 2^20454359 is an apocalyptic number.

20454359 is a deficient number, since it is larger than the sum of its proper divisors (1).

20454359 is an equidigital number, since it uses as much as digits as its factorization.

20454359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 20454359 is about 4522.6495552939. The cubic root of 20454359 is about 273.4819228115.

The spelling of 20454359 in words is "twenty million, four hundred fifty-four thousand, three hundred fifty-nine".