20753459 has 2 divisors, whose sum is σ = 20753460. Its totient is φ = 20753458.

The previous prime is 20753449. The next prime is 20753479. The reversal of 20753459 is 95435702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20753459 - 2⁴ = 20753443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20753419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10376729 + 10376730.

It is an arithmetic number, because the mean of its divisors is an integer number (10376730).

Almost surely, 2^20753459 is an apocalyptic number.

20753459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20753459 is an equidigital number, since it uses as much as digits as its factorization.

20753459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 20753459 is about 4555.5964483259. The cubic root of 20753459 is about 274.8085013900.

It can be divided in two parts, 20753 and 459, that added together give a palindrome (21212).

The spelling of 20753459 in words is "twenty million, seven hundred fifty-three thousand, four hundred fifty-nine".