2021252446553 has 8 divisors (see below), whose sum is σ = 2047568897280. Its totient is φ = 1994954270400.

The previous prime is 2021252446483. The next prime is 2021252446607. The reversal of 2021252446553 is 3556442521202.

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 2021252446553 - 2³⁴ = 2004072577369 is a prime.

It is a super-2 number, since 2×2021252446553² (a number of 25 digits) contains 22 as substring.

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 2021252446553.

It is not an unprimeable number, because it can be changed into a prime (2021252446753) 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, 4345925 + ... + 4788482.

It is an arithmetic number, because the mean of its divisors is an integer number (255946112160).

Almost surely, 2^{2021252446553} is an apocalyptic number.

It is an amenable number.

2021252446553 is a deficient number, since it is larger than the sum of its proper divisors (26316450727).

2021252446553 is an equidigital number, since it uses as much as digits as its factorization.

2021252446553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9137287.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 2021252446553 its reverse (3556442521202), we get a palindrome (5577694967755).

The spelling of 2021252446553 in words is "two trillion, twenty-one billion, two hundred fifty-two million, four hundred forty-six thousand, five hundred fifty-three".