2551021155541 has 8 divisors (see below), whose sum is σ = 2708441124480. Its totient is φ = 2394418953408.

The previous prime is 2551021155521. The next prime is 2551021155559. The reversal of 2551021155541 is 1455511201552.

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 2551021155541 - 2⁷ = 2551021155413 is a prime.

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 2551021155541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551021155521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204435271 + ... + 204447748.

It is an arithmetic number, because the mean of its divisors is an integer number (338555140560).

Almost surely, 2^{2551021155541} is an apocalyptic number.

It is an amenable number.

2551021155541 is a deficient number, since it is larger than the sum of its proper divisors (157419968939).

2551021155541 is a wasteful number, since it uses less digits than its factorization.

2551021155541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408883403.

The product of its (nonzero) digits is 50000, while the sum is 37.

The spelling of 2551021155541 in words is "two trillion, five hundred fifty-one billion, twenty-one million, one hundred fifty-five thousand, five hundred forty-one".