2003551541 has 4 divisors (see below), whose sum is σ = 2121407532. Its totient is φ = 1885695552.

The previous prime is 2003551513. The next prime is 2003551553. The reversal of 2003551541 is 1451553002.

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 1462756516 + 540795025 = 38246^2 + 23255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003551541 - 2⁶ = 2003551477 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 2003551541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003251541) 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, 58927970 + ... + 58928003.

It is an arithmetic number, because the mean of its divisors is an integer number (530351883).

Almost surely, 2^2003551541 is an apocalyptic number.

It is an amenable number.

2003551541 is a deficient number, since it is larger than the sum of its proper divisors (117855991).

2003551541 is a wasteful number, since it uses less digits than its factorization.

2003551541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117855990.

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

The square root of 2003551541 is about 44761.0493733112. The cubic root of 2003551541 is about 1260.6663857646. Note that the first 3 decimals are identical.

The spelling of 2003551541 in words is "two billion, three million, five hundred fifty-one thousand, five hundred forty-one".