20485459 has 4 divisors (see below), whose sum is σ = 21690504. Its totient is φ = 19280416.

The previous prime is 20485441. The next prime is 20485463. The reversal of 20485459 is 95458402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20485459 - 2⁵ = 20485427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20485469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602497 + ... + 602530.

It is an arithmetic number, because the mean of its divisors is an integer number (5422626).

Almost surely, 2^20485459 is an apocalyptic number.

20485459 is a deficient number, since it is larger than the sum of its proper divisors (1205045).

20485459 is a wasteful number, since it uses less digits than its factorization.

20485459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205044.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 20485459 is about 4526.0864993944. The cubic root of 20485459 is about 273.6204585761.

The spelling of 20485459 in words is "twenty million, four hundred eighty-five thousand, four hundred fifty-nine".