2155359 has 4 divisors (see below), whose sum is σ = 2873816. Its totient is φ = 1436904.

The previous prime is 2155333. The next prime is 2155381. The reversal of 2155359 is 9535512.

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

It is not a de Polignac number, because 2155359 - 2⁵ = 2155327 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155319) 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, 359224 + ... + 359229.

It is an arithmetic number, because the mean of its divisors is an integer number (718454).

2^2155359 is an apocalyptic number.

2155359 is a deficient number, since it is larger than the sum of its proper divisors (718457).

2155359 is an equidigital number, since it uses as much as digits as its factorization.

2155359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718456.

The product of its digits is 6750, while the sum is 30.

The square root of 2155359 is about 1468.1140963835. The cubic root of 2155359 is about 129.1734341696.

It can be divided in two parts, 21553 and 59, that added together give a palindrome (21612).

The spelling of 2155359 in words is "two million, one hundred fifty-five thousand, three hundred fifty-nine".