5516581531 has 4 divisors (see below), whose sum is σ = 5547060064. Its totient is φ = 5486103000.

The previous prime is 5516581523. The next prime is 5516581537. The reversal of 5516581531 is 1351856155.

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

It is a cyclic number.

It is not a de Polignac number, because 5516581531 - 2³ = 5516581523 is a prime.

It is a super-2 number, since 2×5516581531² = 60865343576340607922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5516581537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15238995 + ... + 15239356.

It is an arithmetic number, because the mean of its divisors is an integer number (1386765016).

Almost surely, 2^5516581531 is an apocalyptic number.

5516581531 is a deficient number, since it is larger than the sum of its proper divisors (30478533).

5516581531 is a wasteful number, since it uses less digits than its factorization.

5516581531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30478532.

The product of its digits is 90000, while the sum is 40.

The square root of 5516581531 is about 74273.6933981339. The cubic root of 5516581531 is about 1766.9462843558.

The spelling of 5516581531 in words is "five billion, five hundred sixteen million, five hundred eighty-one thousand, five hundred thirty-one".