20441501 has 4 divisors (see below), whose sum is σ = 20994012. Its totient is φ = 19888992.

The previous prime is 20441471. The next prime is 20441563. The reversal of 20441501 is 10514402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10514402 = 2 ⋅5257201.

It can be written as a sum of positive squares in 2 ways, for example, as 13498276 + 6943225 = 3674^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441501 - 2⁶ = 20441437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20441501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441591) 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, 276200 + ... + 276273.

It is an arithmetic number, because the mean of its divisors is an integer number (5248503).

Almost surely, 2^20441501 is an apocalyptic number.

It is an amenable number.

20441501 is a deficient number, since it is larger than the sum of its proper divisors (552511).

20441501 is an equidigital number, since it uses as much as digits as its factorization.

20441501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552510.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20441501 is about 4521.2278199622. The cubic root of 20441501 is about 273.4246054828.

Adding to 20441501 its reverse (10514402), we get a palindrome (30955903).

The spelling of 20441501 in words is "twenty million, four hundred forty-one thousand, five hundred one".