5661031801 has 8 divisors (see below), whose sum is σ = 5686148160. Its totient is φ = 5635959408.

The previous prime is 5661031793. The next prime is 5661031843. The reversal of 5661031801 is 1081301665.

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 5661031801 - 2³ = 5661031793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5661931801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261915 + ... + 282703.

It is an arithmetic number, because the mean of its divisors is an integer number (710768520).

Almost surely, 2^5661031801 is an apocalyptic number.

It is an amenable number.

5661031801 is a deficient number, since it is larger than the sum of its proper divisors (25116359).

5661031801 is a wasteful number, since it uses less digits than its factorization.

5661031801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 5661031801 is about 75239.8285550944. The cubic root of 5661031801 is about 1782.2359437768.

The spelling of 5661031801 in words is "five billion, six hundred sixty-one million, thirty-one thousand, eight hundred one".