5581206 has 24 divisors (see below), whose sum is σ = 12143664. Its totient is φ = 1852560.

The previous prime is 5581201. The next prime is 5581217. The reversal of 5581206 is 6021855.

It is a super-2 number, since 2×5581206² = 62299720828872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5581206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5581201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5100 + ... + 6096.

It is an arithmetic number, because the mean of its divisors is an integer number (505986).

Almost surely, 2^5581206 is an apocalyptic number.

5581206 is an abundant number, since it is smaller than the sum of its proper divisors (6562458).

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

5581206 is a wasteful number, since it uses less digits than its factorization.

5581206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1313 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5581206 is about 2362.4576186675. The cubic root of 5581206 is about 177.3819197464.

It can be divided in two parts, 558 and 1206, that added together give a square (1764 = 42²).

The spelling of 5581206 in words is "five million, five hundred eighty-one thousand, two hundred six".