20061499 has 2 divisors, whose sum is σ = 20061500. Its totient is φ = 20061498.

The previous prime is 20061493. The next prime is 20061523. The reversal of 20061499 is 99416002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20061499 - 2³ = 20061491 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20061499.

It is not a weakly prime, because it can be changed into another prime (20061491) 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, 10030749 + 10030750.

It is an arithmetic number, because the mean of its divisors is an integer number (10030750).

Almost surely, 2^20061499 is an apocalyptic number.

20061499 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061499 is an equidigital number, since it uses as much as digits as its factorization.

20061499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20061499 is about 4479.0064746548. The cubic root of 20061499 is about 271.7197002531.

The spelling of 20061499 in words is "twenty million, sixty-one thousand, four hundred ninety-nine".