2291205 has 16 divisors (see below), whose sum is σ = 4189824. Its totient is φ = 1047360.

The previous prime is 2291197. The next prime is 2291213. The reversal of 2291205 is 5021922.

It is an interprime number because it is at equal distance from previous prime (2291197) and next prime (2291213).

It is not a de Polignac number, because 2291205 - 2³ = 2291197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10806 + ... + 11015.

It is an arithmetic number, because the mean of its divisors is an integer number (261864).

2^2291205 is an apocalyptic number.

It is an amenable number.

2291205 is a deficient number, since it is larger than the sum of its proper divisors (1898619).

2291205 is a wasteful number, since it uses less digits than its factorization.

2291205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21836.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2291205 is about 1513.6726858869. The cubic root of 2291205 is about 131.8321443070.

The spelling of 2291205 in words is "two million, two hundred ninety-one thousand, two hundred five".