2641505 has 8 divisors (see below), whose sum is σ = 3213672. Its totient is φ = 2083968.

The previous prime is 2641501. The next prime is 2641517. The reversal of 2641505 is 5051462.

It can be written as a sum of positive squares in 4 ways, for example, as 474721 + 2166784 = 689^2 + 1472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2641505 - 2² = 2641501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2641501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3254 + ... + 3983.

It is an arithmetic number, because the mean of its divisors is an integer number (401709).

2^2641505 is an apocalyptic number.

It is an amenable number.

2641505 is a deficient number, since it is larger than the sum of its proper divisors (572167).

2641505 is an equidigital number, since it uses as much as digits as its factorization.

2641505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2641505 is about 1625.2707466758. The cubic root of 2641505 is about 138.2347227095.

Adding to 2641505 its reverse (5051462), we get a palindrome (7692967).

The spelling of 2641505 in words is "two million, six hundred forty-one thousand, five hundred five".