5591111 has 4 divisors (see below), whose sum is σ = 5885400. Its totient is φ = 5296824.

The previous prime is 5591101. The next prime is 5591123. The reversal of 5591111 is 1111955.

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

It is a cyclic number.

It is not a de Polignac number, because 5591111 - 2¹⁰ = 5590087 is a prime.

It is a Duffinian number.

5591111 is a modest number, since divided by 1111 gives 559 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591101) 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, 147116 + ... + 147153.

It is an arithmetic number, because the mean of its divisors is an integer number (1471350).

Almost surely, 2^5591111 is an apocalyptic number.

5591111 is a deficient number, since it is larger than the sum of its proper divisors (294289).

5591111 is a wasteful number, since it uses less digits than its factorization.

5591111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294288.

The product of its digits is 225, while the sum is 23.

The square root of 5591111 is about 2364.5530233006. The cubic root of 5591111 is about 177.4867913202.

It can be divided in two parts, 55 and 91111, that multiplied together give a palindrome (5011105).

The spelling of 5591111 in words is "five million, five hundred ninety-one thousand, one hundred eleven".