5581125 has 72 divisors (see below), whose sum is σ = 11328408. Its totient is φ = 2640000.

The previous prime is 5581091. The next prime is 5581129. The reversal of 5581125 is 5211855.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 4322241 = 1122^2 + 2079^2 .

It is not a de Polignac number, because 5581125 - 2⁶ = 5581061 is a prime.

It is a super-2 number, since 2×5581125² = 62297912531250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581129) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 136105 + ... + 136145.

It is an arithmetic number, because the mean of its divisors is an integer number (157339).

Almost surely, 2^5581125 is an apocalyptic number.

5581125 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5581125 is an abundant number, since it is smaller than the sum of its proper divisors (5747283).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5581125 is a wasteful number, since it uses less digits than its factorization.

5581125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 60 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 5581125 is about 2362.4404754406. The cubic root of 5581125 is about 177.3810616281.

The spelling of 5581125 in words is "five million, five hundred eighty-one thousand, one hundred twenty-five".