5515387 has 4 divisors (see below), whose sum is σ = 5535160. Its totient is φ = 5495616.

The previous prime is 5515357. The next prime is 5515397. The reversal of 5515387 is 7835155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7835155 = 5 ⋅1567031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5515387 is a prime.

It is a Duffinian number.

5515387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5515357) 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, 9462 + ... + 10027.

It is an arithmetic number, because the mean of its divisors is an integer number (1383790).

Almost surely, 2^5515387 is an apocalyptic number.

5515387 is a deficient number, since it is larger than the sum of its proper divisors (19773).

5515387 is a wasteful number, since it uses less digits than its factorization.

5515387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19772.

The product of its digits is 21000, while the sum is 34.

The square root of 5515387 is about 2348.4861081131. The cubic root of 5515387 is about 176.6818740123.

The spelling of 5515387 in words is "five million, five hundred fifteen thousand, three hundred eighty-seven".