5515531 has 8 divisors (see below), whose sum is σ = 6674400. Its totient is φ = 4449408.

The previous prime is 5515513. The next prime is 5515541. The reversal of 5515531 is 1355155.

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 5515531 - 2⁹ = 5515019 is a prime.

It is a super-2 number, since 2×5515531² = 60842164423922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5515496 and 5515505.

It is not an unprimeable number, because it can be changed into a prime (5515501) 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, 23056 + ... + 23293.

It is an arithmetic number, because the mean of its divisors is an integer number (834300).

Almost surely, 2^5515531 is an apocalyptic number.

5515531 is a deficient number, since it is larger than the sum of its proper divisors (1158869).

5515531 is a wasteful number, since it uses less digits than its factorization.

5515531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46373.

The product of its digits is 1875, while the sum is 25.

The square root of 5515531 is about 2348.5167659610. The cubic root of 5515531 is about 176.6834116480.

The spelling of 5515531 in words is "five million, five hundred fifteen thousand, five hundred thirty-one".