5101010081 has 4 divisors (see below), whose sum is σ = 5322793152. Its totient is φ = 4879227012.

The previous prime is 5101010053. The next prime is 5101010111. The reversal of 5101010081 is 1800101015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5101010081 - 2¹⁰ = 5101009057 is a prime.

It is a super-2 number, since 2×5101010081² = 52040607692927253122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5101015081) 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, 110891501 + ... + 110891546.

It is an arithmetic number, because the mean of its divisors is an integer number (1330698288).

Almost surely, 2^5101010081 is an apocalyptic number.

It is an amenable number.

5101010081 is a deficient number, since it is larger than the sum of its proper divisors (221783071).

5101010081 is a wasteful number, since it uses less digits than its factorization.

5101010081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221783070.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 5101010081 is about 71421.3559168404. The cubic root of 5101010081 is about 1721.4142506794.

Adding to 5101010081 its reverse (1800101015), we get a palindrome (6901111096).

The spelling of 5101010081 in words is "five billion, one hundred one million, ten thousand, eighty-one".