2155214 has 4 divisors (see below), whose sum is σ = 3232824. Its totient is φ = 1077606.

The previous prime is 2155207. The next prime is 2155253. The reversal of 2155214 is 4125512.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538802 + ... + 538805.

It is an arithmetic number, because the mean of its divisors is an integer number (808206).

2^2155214 is an apocalyptic number.

2155214 is a deficient number, since it is larger than the sum of its proper divisors (1077610).

2155214 is a wasteful number, since it uses less digits than its factorization.

2155214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077609.

The product of its digits is 400, while the sum is 20.

The square root of 2155214 is about 1468.0647124701. The cubic root of 2155214 is about 129.1705374259.

The spelling of 2155214 in words is "two million, one hundred fifty-five thousand, two hundred fourteen".