2533242621 has 64 divisors (see below), whose sum is σ = 4465664000. Its totient is φ = 1265761728.

The previous prime is 2533242619. The next prime is 2533242637. The reversal of 2533242621 is 1262423352.

It is not a de Polignac number, because 2533242621 - 2¹ = 2533242619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2533242611) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 249180 + ... + 259146.

It is an arithmetic number, because the mean of its divisors is an integer number (69776000).

Almost surely, 2^2533242621 is an apocalyptic number.

2533242621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2533242621 is a deficient number, since it is larger than the sum of its proper divisors (1932421379).

2533242621 is a wasteful number, since it uses less digits than its factorization.

2533242621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10023 (or 10009 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 2533242621 is about 50331.3284247495. The cubic root of 2533242621 is about 1363.1979639280.

Adding to 2533242621 its reverse (1262423352), we get a palindrome (3795665973).

The spelling of 2533242621 in words is "two billion, five hundred thirty-three million, two hundred forty-two thousand, six hundred twenty-one".