5105661 has 32 divisors (see below), whose sum is σ = 8294400. Its totient is φ = 2753280.

The previous prime is 5105641. The next prime is 5105671. The reversal of 5105661 is 1665015.

It is not a de Polignac number, because 5105661 - 2⁵ = 5105629 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5105641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10420 + ... + 10898.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

Almost surely, 2^5105661 is an apocalyptic number.

5105661 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5105661 is a deficient number, since it is larger than the sum of its proper divisors (3188739).

5105661 is a wasteful number, since it uses less digits than its factorization.

5105661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 5105661 is about 2259.5709769777. The cubic root of 5105661 is about 172.1937266455.

The spelling of 5105661 in words is "five million, one hundred five thousand, six hundred sixty-one".