2291601 has 16 divisors (see below), whose sum is σ = 3343424. Its totient is φ = 1387584.

The previous prime is 2291591. The next prime is 2291623. The reversal of 2291601 is 1061922.

It is not a de Polignac number, because 2291601 - 2¹³ = 2283409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2291801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2175 + ... + 3051.

It is an arithmetic number, because the mean of its divisors is an integer number (208964).

2^2291601 is an apocalyptic number.

It is an amenable number.

2291601 is a deficient number, since it is larger than the sum of its proper divisors (1051823).

2291601 is a wasteful number, since it uses less digits than its factorization.

2291601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 2291601 is about 1513.8034879072. The cubic root of 2291601 is about 131.8397389311.

It can be divided in two parts, 229 and 1601, that added together give a triangular number (1830 = T₆₀).

The spelling of 2291601 in words is "two million, two hundred ninety-one thousand, six hundred one".