2021501441 has 4 divisors (see below), whose sum is σ = 2109392832. Its totient is φ = 1933610052.

The previous prime is 2021501429. The next prime is 2021501453. The reversal of 2021501441 is 1441051202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1441051202 = 2 ⋅720525601.

It is an interprime number because it is at equal distance from previous prime (2021501429) and next prime (2021501453).

It is a cyclic number.

It is not a de Polignac number, because 2021501441 - 2¹⁰ = 2021500417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021501491) 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, 43945661 + ... + 43945706.

It is an arithmetic number, because the mean of its divisors is an integer number (527348208).

Almost surely, 2^2021501441 is an apocalyptic number.

It is an amenable number.

2021501441 is a deficient number, since it is larger than the sum of its proper divisors (87891391).

2021501441 is an equidigital number, since it uses as much as digits as its factorization.

2021501441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87891390.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2021501441 is about 44961.1103176957. The cubic root of 2021501441 is about 1264.4199856257.

Adding to 2021501441 its reverse (1441051202), we get a palindrome (3462552643).

The spelling of 2021501441 in words is "two billion, twenty-one million, five hundred one thousand, four hundred forty-one".