2155022 has 16 divisors (see below), whose sum is σ = 3449952. Its totient is φ = 1006080.

The previous prime is 2155009. The next prime is 2155057. The reversal of 2155022 is 2205512.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 8063 + ... + 8325.

It is an arithmetic number, because the mean of its divisors is an integer number (215622).

2^2155022 is an apocalyptic number.

2155022 is a deficient number, since it is larger than the sum of its proper divisors (1294930).

2155022 is a wasteful number, since it uses less digits than its factorization.

2155022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2155022 is about 1467.9993188009. Note that the first 3 decimals coincide. The cubic root of 2155022 is about 129.1667015377.

The spelling of 2155022 in words is "two million, one hundred fifty-five thousand, twenty-two".