5601881 has 2 divisors, whose sum is σ = 5601882. Its totient is φ = 5601880.

The previous prime is 5601877. The next prime is 5601887. The reversal of 5601881 is 1881065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5331481 + 270400 = 2309^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 5601881 - 2² = 5601877 is a prime.

It is a super-2 number, since 2×5601881² = 62762141476322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5601887) 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 as a sum of consecutive naturals, namely, 2800940 + 2800941.

It is an arithmetic number, because the mean of its divisors is an integer number (2800941).

Almost surely, 2^5601881 is an apocalyptic number.

It is an amenable number.

5601881 is a deficient number, since it is larger than the sum of its proper divisors (1).

5601881 is an equidigital number, since it uses as much as digits as its factorization.

5601881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 5601881 is about 2366.8293136599. The cubic root of 5601881 is about 177.6006808302.

The spelling of 5601881 in words is "five million, six hundred one thousand, eight hundred eighty-one".