5551002541521 has 16 divisors (see below), whose sum is σ = 8223799907520. Its totient is φ = 3700626763680.

The previous prime is 5551002541517. The next prime is 5551002541541. The reversal of 5551002541521 is 1251452001555.

5551002541521 is a `hidden beast` number, since 5 + 5 + 5 + 100 + 2 + 541 + 5 + 2 + 1 = 666.

It is not a de Polignac number, because 5551002541521 - 2² = 5551002541517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5551002541541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1393246 + ... + 3611528.

It is an arithmetic number, because the mean of its divisors is an integer number (513987494220).

Almost surely, 2^{5551002541521} is an apocalyptic number.

It is an amenable number.

5551002541521 is a deficient number, since it is larger than the sum of its proper divisors (2672797365999).

5551002541521 is a wasteful number, since it uses less digits than its factorization.

5551002541521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310973 (or 2310967 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 5551002541521 in words is "five trillion, five hundred fifty-one billion, two million, five hundred forty-one thousand, five hundred twenty-one".