4088561 has 4 divisors (see below), whose sum is σ = 4188324. Its totient is φ = 3988800.

The previous prime is 4088543. The next prime is 4088563. The reversal of 4088561 is 1658804.

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 776161 + 3312400 = 881^2 + 1820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4088561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4088563) 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, 49820 + ... + 49901.

It is an arithmetic number, because the mean of its divisors is an integer number (1047081).

Almost surely, 2^4088561 is an apocalyptic number.

4088561 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

4088561 is a deficient number, since it is larger than the sum of its proper divisors (99763).

4088561 is an equidigital number, since it uses as much as digits as its factorization.

4088561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99762.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 4088561 is about 2022.0190404643. The cubic root of 4088561 is about 159.9030793226.

The spelling of 4088561 in words is "four million, eighty-eight thousand, five hundred sixty-one".