2145213 has 24 divisors (see below), whose sum is σ = 3751488. Its totient is φ = 1153152.

The previous prime is 2145197. The next prime is 2145239. The reversal of 2145213 is 3125412.

It is not a de Polignac number, because 2145213 - 2⁴ = 2145197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70 + ... + 2072.

It is an arithmetic number, because the mean of its divisors is an integer number (156312).

2^2145213 is an apocalyptic number.

It is an amenable number.

2145213 is a deficient number, since it is larger than the sum of its proper divisors (1606275).

2145213 is a wasteful number, since it uses less digits than its factorization.

2145213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033 (or 2030 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2145213 is about 1464.6545667836. The cubic root of 2145213 is about 128.9704276904.

The spelling of 2145213 in words is "two million, one hundred forty-five thousand, two hundred thirteen".