2145590 has 8 divisors (see below), whose sum is σ = 3862080. Its totient is φ = 858232.

The previous prime is 2145551. The next prime is 2145617. The reversal of 2145590 is 955412.

2145590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107270 + ... + 107289.

It is an arithmetic number, because the mean of its divisors is an integer number (482760).

2^2145590 is an apocalyptic number.

2145590 is a deficient number, since it is larger than the sum of its proper divisors (1716490).

2145590 is a wasteful number, since it uses less digits than its factorization.

2145590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214566.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2145590 is about 1464.7832604177. The cubic root of 2145590 is about 128.9779823408.

The spelling of 2145590 in words is "two million, one hundred forty-five thousand, five hundred ninety".