2155933 has 6 divisors (see below), whose sum is σ = 2334714. Its totient is φ = 1989936.

The previous prime is 2155931. The next prime is 2155961. The reversal of 2155933 is 3395512.

2155933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3844 + 2152089 = 62^2 + 1467^2 .

It is not a de Polignac number, because 2155933 - 2¹ = 2155931 is a prime.

It is a Duffinian number.

2155933 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155931) 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 5 ways as a sum of consecutive naturals, for example, 6210 + ... + 6547.

It is an arithmetic number, because the mean of its divisors is an integer number (389119).

2^2155933 is an apocalyptic number.

It is an amenable number.

2155933 is a deficient number, since it is larger than the sum of its proper divisors (178781).

2155933 is a wasteful number, since it uses less digits than its factorization.

2155933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12783 (or 12770 counting only the distinct ones).

The product of its digits is 4050, while the sum is 28.

The square root of 2155933 is about 1468.3095722633. The cubic root of 2155933 is about 129.1849000044.

The spelling of 2155933 in words is "two million, one hundred fifty-five thousand, nine hundred thirty-three".