20200501 has 4 divisors (see below), whose sum is σ = 20897100. Its totient is φ = 19503904.

The previous prime is 20200441. The next prime is 20200511. The reversal of 20200501 is 10500202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11492100 + 8708401 = 3390^2 + 2951^2 .

It is a cyclic number.

It is not a de Polignac number, because 20200501 - 2¹⁹ = 19676213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200511) 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, 348256 + ... + 348313.

It is an arithmetic number, because the mean of its divisors is an integer number (5224275).

Almost surely, 2^20200501 is an apocalyptic number.

It is an amenable number.

20200501 is a deficient number, since it is larger than the sum of its proper divisors (696599).

20200501 is an equidigital number, since it uses as much as digits as its factorization.

20200501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696598.

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20200501 is about 4494.4967460217. The cubic root of 20200501 is about 272.3458196915.

Adding to 20200501 its reverse (10500202), we get a palindrome (30700703).

The spelling of 20200501 in words is "twenty million, two hundred thousand, five hundred one".