2158265 has 8 divisors (see below), whose sum is σ = 2608200. Its totient is φ = 1714432.

The previous prime is 2158259. The next prime is 2158291. The reversal of 2158265 is 5628512.

It can be written as a sum of positive squares in 4 ways, for example, as 29584 + 2128681 = 172^2 + 1459^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2158265 - 2¹² = 2154169 is a prime.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (326025).

2^2158265 is an apocalyptic number.

It is an amenable number.

2158265 is a deficient number, since it is larger than the sum of its proper divisors (449935).

2158265 is a wasteful number, since it uses less digits than its factorization.

2158265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051.

The product of its digits is 4800, while the sum is 29.

The square root of 2158265 is about 1469.1034681056. The cubic root of 2158265 is about 129.2314615366.

The spelling of 2158265 in words is "two million, one hundred fifty-eight thousand, two hundred sixty-five".