2191275 has 18 divisors (see below), whose sum is σ = 3925220. Its totient is φ = 1168560.

The previous prime is 2191261. The next prime is 2191291. The reversal of 2191275 is 5721912.

It is not a de Polignac number, because 2191275 - 2⁵ = 2191243 is a prime.

It is a super-2 number, since 2×2191275² = 9603372251250, which contains 22 as substring.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 4645 + ... + 5094.

2^2191275 is an apocalyptic number.

2191275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2191275 is a deficient number, since it is larger than the sum of its proper divisors (1733945).

2191275 is a wasteful number, since it uses less digits than its factorization.

2191275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755 (or 9747 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2191275 is about 1480.2955785923. The cubic root of 2191275 is about 129.8869826431.

The spelling of 2191275 in words is "two million, one hundred ninety-one thousand, two hundred seventy-five".