20466501 has 8 divisors (see below), whose sum is σ = 29769504. Its totient is φ = 12403920.

The previous prime is 20466497. The next prime is 20466577. The reversal of 20466501 is 10566402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20466501 - 2² = 20466497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466001) 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 in 7 ways as a sum of consecutive naturals, for example, 310066 + ... + 310131.

It is an arithmetic number, because the mean of its divisors is an integer number (3721188).

Almost surely, 2^20466501 is an apocalyptic number.

It is an amenable number.

20466501 is a deficient number, since it is larger than the sum of its proper divisors (9303003).

20466501 is a wasteful number, since it uses less digits than its factorization.

20466501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620211.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20466501 is about 4523.9917108677. The cubic root of 20466501 is about 273.5360263674.

Subtracting from 20466501 its reverse (10566402), we obtain a palindrome (9900099).

The spelling of 20466501 in words is "twenty million, four hundred sixty-six thousand, five hundred one".