2165454 has 20 divisors (see below), whose sum is σ = 4852584. Its totient is φ = 721764.

The previous prime is 2165453. The next prime is 2165461. The reversal of 2165454 is 4545612.

2165454 is a `hidden beast` number, since 2 + 1 + 654 + 5 + 4 = 666.

It is a super-2 number, since 2×2165454² = 9378382052232, which contains 22 as substring.

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

It is an alternating number because its digits alternate between even and odd.

2165454 is a modest number, since divided by 5454 gives 216 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2165453) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6522 + ... + 6845.

2^2165454 is an apocalyptic number.

2165454 is an abundant number, since it is smaller than the sum of its proper divisors (2687130).

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

2165454 is a wasteful number, since it uses less digits than its factorization.

2165454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13381 (or 13372 counting only the distinct ones).

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

The square root of 2165454 is about 1471.5481643494. The cubic root of 2165454 is about 129.3747889095.

The spelling of 2165454 in words is "two million, one hundred sixty-five thousand, four hundred fifty-four".