2102545553 has 4 divisors (see below), whose sum is σ = 2117671920. Its totient is φ = 2087419188.

The previous prime is 2102545541. The next prime is 2102545561. The reversal of 2102545553 is 3555452012.

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.

It is a cyclic number.

It is not a de Polignac number, because 2102545553 - 2⁴ = 2102545537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102545513) 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, 7562975 + ... + 7563252.

It is an arithmetic number, because the mean of its divisors is an integer number (529417980).

Almost surely, 2^2102545553 is an apocalyptic number.

It is an amenable number.

2102545553 is a deficient number, since it is larger than the sum of its proper divisors (15126367).

2102545553 is a wasteful number, since it uses less digits than its factorization.

2102545553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15126366.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 2102545553 is about 45853.5227981450. The cubic root of 2102545553 is about 1281.0963817949.

Adding to 2102545553 its reverse (3555452012), we get a palindrome (5657997565).

The spelling of 2102545553 in words is "two billion, one hundred two million, five hundred forty-five thousand, five hundred fifty-three".