5115581 has 4 divisors (see below), whose sum is σ = 5234592. Its totient is φ = 4996572.

The previous prime is 5115577. The next prime is 5115599. The reversal of 5115581 is 1855115.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5115581 - 2² = 5115577 is a prime.

It is a super-2 number, since 2×5115581² = 52338337935122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5115581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59441 + ... + 59526.

It is an arithmetic number, because the mean of its divisors is an integer number (1308648).

Almost surely, 2^5115581 is an apocalyptic number.

It is an amenable number.

5115581 is a deficient number, since it is larger than the sum of its proper divisors (119011).

5115581 is a wasteful number, since it uses less digits than its factorization.

5115581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119010.

The product of its digits is 1000, while the sum is 26.

The square root of 5115581 is about 2261.7650187409. The cubic root of 5115581 is about 172.3051752692.

The spelling of 5115581 in words is "five million, one hundred fifteen thousand, five hundred eighty-one".