5515553 has 4 divisors (see below), whose sum is σ = 5664660. Its totient is φ = 5366448.

The previous prime is 5515541. The next prime is 5515579. The reversal of 5515553 is 3555155.

5515553 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3751969 + 1763584 = 1937^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 5515553 - 2²² = 1321249 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5515513) 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, 74498 + ... + 74571.

It is an arithmetic number, because the mean of its divisors is an integer number (1416165).

Almost surely, 2^5515553 is an apocalyptic number.

It is an amenable number.

5515553 is a deficient number, since it is larger than the sum of its proper divisors (149107).

5515553 is a wasteful number, since it uses less digits than its factorization.

5515553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149106.

The product of its digits is 9375, while the sum is 29.

The square root of 5515553 is about 2348.5214497637. The cubic root of 5515553 is about 176.6836465623.

The spelling of 5515553 in words is "five million, five hundred fifteen thousand, five hundred fifty-three".