2164455 has 16 divisors (see below), whose sum is σ = 3848160. Its totient is φ = 1154304.

The previous prime is 2164453. The next prime is 2164471. The reversal of 2164455 is 5544612.

2164455 is a `hidden beast` number, since 216 + 445 + 5 = 666.

It is not a de Polignac number, because 2164455 - 2¹ = 2164453 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7882 + ... + 8151.

It is an arithmetic number, because the mean of its divisors is an integer number (240510).

2^2164455 is an apocalyptic number.

2164455 is a deficient number, since it is larger than the sum of its proper divisors (1683705).

2164455 is a wasteful number, since it uses less digits than its factorization.

2164455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16047 (or 16041 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 2164455 is about 1471.2086867607. The cubic root of 2164455 is about 129.3548908044.

The spelling of 2164455 in words is "two million, one hundred sixty-four thousand, four hundred fifty-five".