5601010081 has 4 divisors (see below), whose sum is σ = 5621230612. Its totient is φ = 5580789552.

The previous prime is 5601010039. The next prime is 5601010099. The reversal of 5601010081 is 1800101065.

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 795747681 + 4805262400 = 28209^2 + 69320^2 .

It is a cyclic number.

It is not a de Polignac number, because 5601010081 - 2¹¹ = 5601008033 is a prime.

It is a super-2 number, since 2×5601010081² = 62742627854927253122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5601010981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10109850 + ... + 10110403.

It is an arithmetic number, because the mean of its divisors is an integer number (1405307653).

Almost surely, 2^5601010081 is an apocalyptic number.

It is an amenable number.

5601010081 is a deficient number, since it is larger than the sum of its proper divisors (20220531).

5601010081 is a wasteful number, since it uses less digits than its factorization.

5601010081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220530.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 5601010081 is about 74839.8963187417. The cubic root of 5601010081 is about 1775.9147655144.

The spelling of 5601010081 in words is "five billion, six hundred one million, ten thousand, eighty-one".