5513231 has 4 divisors (see below), whose sum is σ = 5521272. Its totient is φ = 5505192.

The previous prime is 5513227. The next prime is 5513237. The reversal of 5513231 is 1323155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1323155 = 5 ⋅264631.

It is a cyclic number.

It is not a de Polignac number, because 5513231 - 2² = 5513227 is a prime.

It is a super-2 number, since 2×5513231² = 60791432118722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5513237) 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, 2885 + ... + 4398.

It is an arithmetic number, because the mean of its divisors is an integer number (1380318).

Almost surely, 2^5513231 is an apocalyptic number.

5513231 is a deficient number, since it is larger than the sum of its proper divisors (8041).

5513231 is an equidigital number, since it uses as much as digits as its factorization.

5513231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8040.

The product of its digits is 450, while the sum is 20.

The square root of 5513231 is about 2348.0270441373. The cubic root of 5513231 is about 176.6588489876.

Adding to 5513231 its reverse (1323155), we get a palindrome (6836386).

The spelling of 5513231 in words is "five million, five hundred thirteen thousand, two hundred thirty-one".