5515491 has 8 divisors (see below), whose sum is σ = 7741120. Its totient is φ = 3483432.

The previous prime is 5515457. The next prime is 5515501. The reversal of 5515491 is 1945155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5515491 - 2⁹ = 5514979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5515421) 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, 48325 + ... + 48438.

It is an arithmetic number, because the mean of its divisors is an integer number (967640).

Almost surely, 2^5515491 is an apocalyptic number.

5515491 is a deficient number, since it is larger than the sum of its proper divisors (2225629).

5515491 is a wasteful number, since it uses less digits than its factorization.

5515491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96785.

The product of its digits is 4500, while the sum is 30.

The square root of 5515491 is about 2348.5082499323. The cubic root of 5515491 is about 176.6829845297.

It can be divided in two parts, 5515 and 491, that added together give a palindrome (6006).

The spelling of 5515491 in words is "five million, five hundred fifteen thousand, four hundred ninety-one".