2591101 has 4 divisors (see below), whose sum is σ = 2600604. Its totient is φ = 2581600.

The previous prime is 2591093. The next prime is 2591119. The reversal of 2591101 is 1011952.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2102500 + 488601 = 1450^2 + 699^2 .

It is a cyclic number.

It is not a de Polignac number, because 2591101 - 2³ = 2591093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591131) 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, 4330 + ... + 4891.

It is an arithmetic number, because the mean of its divisors is an integer number (650151).

2^2591101 is an apocalyptic number.

It is an amenable number.

2591101 is a deficient number, since it is larger than the sum of its proper divisors (9503).

2591101 is an equidigital number, since it uses as much as digits as its factorization.

2591101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 2591101 is about 1609.6897216545. The cubic root of 2591101 is about 137.3498261264.

The spelling of 2591101 in words is "two million, five hundred ninety-one thousand, one hundred one".