20022501 has 12 divisors (see below), whose sum is σ = 26972288. Its totient is φ = 13211664.

The previous prime is 20022493. The next prime is 20022503. The reversal of 20022501 is 10522002.

It is not a de Polignac number, because 20022501 - 2³ = 20022493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022503) 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 11 ways as a sum of consecutive naturals, for example, 89676 + ... + 89898.

Almost surely, 2^20022501 is an apocalyptic number.

It is an amenable number.

20022501 is a deficient number, since it is larger than the sum of its proper divisors (6949787).

20022501 is an equidigital number, since it uses as much as digits as its factorization.

20022501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 20022501 is about 4474.6509361066. The cubic root of 20022501 is about 271.5435186931.

Adding to 20022501 its reverse (10522002), we get a palindrome (30544503).

The spelling of 20022501 in words is "twenty million, twenty-two thousand, five hundred one".