2158553 has 4 divisors (see below), whose sum is σ = 2169600. Its totient is φ = 2147508.

The previous prime is 2158549. The next prime is 2158567. The reversal of 2158553 is 3558512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2158553 - 2² = 2158549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2158523) 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 3 ways as a sum of consecutive naturals, for example, 5225 + ... + 5622.

It is an arithmetic number, because the mean of its divisors is an integer number (542400).

2^2158553 is an apocalyptic number.

It is an amenable number.

2158553 is a deficient number, since it is larger than the sum of its proper divisors (11047).

2158553 is a wasteful number, since it uses less digits than its factorization.

2158553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046.

The product of its digits is 6000, while the sum is 29.

The square root of 2158553 is about 1469.2014838000. The cubic root of 2158553 is about 129.2372095186.

The spelling of 2158553 in words is "two million, one hundred fifty-eight thousand, five hundred fifty-three".