20116501 has 8 divisors (see below), whose sum is σ = 20490624. Its totient is φ = 19745040.

The previous prime is 20116487. The next prime is 20116531. The reversal of 20116501 is 10561102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20116501 - 2⁹ = 20115989 is a prime.

It is a super-2 number, since 2×20116501² = 809347224966002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20116531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20320 + ... + 21286.

It is an arithmetic number, because the mean of its divisors is an integer number (2561328).

Almost surely, 2^20116501 is an apocalyptic number.

It is an amenable number.

20116501 is a deficient number, since it is larger than the sum of its proper divisors (374123).

20116501 is an equidigital number, since it uses as much as digits as its factorization.

20116501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 20116501 is about 4485.1422496951. The cubic root of 20116501 is about 271.9677955312.

Adding to 20116501 its reverse (10561102), we get a palindrome (30677603).

The spelling of 20116501 in words is "twenty million, one hundred sixteen thousand, five hundred one".