2145558 has 8 divisors (see below), whose sum is σ = 4291128. Its totient is φ = 715184.

The previous prime is 2145551. The next prime is 2145617. The reversal of 2145558 is 8555412.

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

2145558 is an admirable number.

It is a super-3 number, since 3×2145558³ = 29630708233953243336, which contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178791 + ... + 178802.

It is an arithmetic number, because the mean of its divisors is an integer number (536391).

2^2145558 is an apocalyptic number.

2145558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2145558 is a wasteful number, since it uses less digits than its factorization.

2145558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357598.

The product of its digits is 8000, while the sum is 30.

The square root of 2145558 is about 1464.7723372593. The cubic root of 2145558 is about 128.9773411317.

The spelling of 2145558 in words is "two million, one hundred forty-five thousand, five hundred fifty-eight".