2100553541 has 4 divisors (see below), whose sum is σ = 2224115532. Its totient is φ = 1976991552.

The previous prime is 2100553537. The next prime is 2100553561. The reversal of 2100553541 is 1453550012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1019524900 + 1081028641 = 31930^2 + 32879^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100553541 - 2² = 2100553537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100553541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100553501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61780970 + ... + 61781003.

It is an arithmetic number, because the mean of its divisors is an integer number (556028883).

Almost surely, 2^2100553541 is an apocalyptic number.

It is an amenable number.

2100553541 is a deficient number, since it is larger than the sum of its proper divisors (123561991).

2100553541 is a wasteful number, since it uses less digits than its factorization.

2100553541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123561990.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 2100553541 is about 45831.7961790720. The cubic root of 2100553541 is about 1280.6916714634.

The spelling of 2100553541 in words is "two billion, one hundred million, five hundred fifty-three thousand, five hundred forty-one".