5551165516531 has 8 divisors (see below), whose sum is σ = 5686950140928. Its totient is φ = 5415399480000.

The previous prime is 5551165516453. The next prime is 5551165516537. The reversal of 5551165516531 is 1356155611555.

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 5551165516531 - 2²⁵ = 5551131962099 is a prime.

It is a super-2 number, since 2×5551165516531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5551165516537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4041420 + ... + 5237881.

It is an arithmetic number, because the mean of its divisors is an integer number (710868767616).

Almost surely, 2^{5551165516531} is an apocalyptic number.

5551165516531 is a deficient number, since it is larger than the sum of its proper divisors (135784624397).

5551165516531 is a wasteful number, since it uses less digits than its factorization.

5551165516531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293933.

The product of its digits is 1687500, while the sum is 49.

The spelling of 5551165516531 in words is "five trillion, five hundred fifty-one billion, one hundred sixty-five million, five hundred sixteen thousand, five hundred thirty-one".