2046581 has 4 divisors (see below), whose sum is σ = 2101932. Its totient is φ = 1991232.

The previous prime is 2046553. The next prime is 2046607. The reversal of 2046581 is 1856402.

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 1865956 + 180625 = 1366^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2046581 - 2¹⁰ = 2045557 is a prime.

It is a super-2 number, since 2×2046581² = 8376987579122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2046581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2046881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27620 + ... + 27693.

It is an arithmetic number, because the mean of its divisors is an integer number (525483).

2^2046581 is an apocalyptic number.

It is an amenable number.

2046581 is a deficient number, since it is larger than the sum of its proper divisors (55351).

2046581 is an equidigital number, since it uses as much as digits as its factorization.

2046581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55350.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2046581 is about 1430.5876414956. The cubic root of 2046581 is about 126.9627476662.

The spelling of 2046581 in words is "two million, forty-six thousand, five hundred eighty-one".