20514499 has 2 divisors, whose sum is σ = 20514500. Its totient is φ = 20514498.

The previous prime is 20514497. The next prime is 20514503. The reversal of 20514499 is 99441502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20514499 - 2¹ = 20514497 is a prime.

Together with 20514497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20514497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10257249 + 10257250.

It is an arithmetic number, because the mean of its divisors is an integer number (10257250).

Almost surely, 2^20514499 is an apocalyptic number.

20514499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20514499 is an equidigital number, since it uses as much as digits as its factorization.

20514499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 20514499 is about 4529.2934327553. The cubic root of 20514499 is about 273.7496914851.

The spelling of 20514499 in words is "twenty million, five hundred fourteen thousand, four hundred ninety-nine".