2155582 has 16 divisors (see below), whose sum is σ = 3799152. Its totient is φ = 904320.

The previous prime is 2155579. The next prime is 2155597. The reversal of 2155582 is 2855512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3483 + ... + 4054.

It is an arithmetic number, because the mean of its divisors is an integer number (237447).

2^2155582 is an apocalyptic number.

2155582 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2155582 is a deficient number, since it is larger than the sum of its proper divisors (1643570).

2155582 is a wasteful number, since it uses less digits than its factorization.

2155582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7563.

The product of its digits is 4000, while the sum is 28.

The square root of 2155582 is about 1468.1900421948. The cubic root of 2155582 is about 129.1778889082.

The spelling of 2155582 in words is "two million, one hundred fifty-five thousand, five hundred eighty-two".