5515687 has 4 divisors (see below), whose sum is σ = 5520960. Its totient is φ = 5510416.

The previous prime is 5515673. The next prime is 5515691. The reversal of 5515687 is 7865155.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5515687 is a prime.

It is a Duffinian number.

5515687 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5515637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 478 + ... + 3355.

It is an arithmetic number, because the mean of its divisors is an integer number (1380240).

Almost surely, 2^5515687 is an apocalyptic number.

5515687 is a deficient number, since it is larger than the sum of its proper divisors (5273).

5515687 is a wasteful number, since it uses less digits than its factorization.

5515687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5272.

The product of its digits is 42000, while the sum is 37.

The square root of 5515687 is about 2348.5499781780. The cubic root of 5515687 is about 176.6850773899.

The spelling of 5515687 in words is "five million, five hundred fifteen thousand, six hundred eighty-seven".