51022081 has 8 divisors (see below), whose sum is σ = 57018528. Its totient is φ = 45252000.

The previous prime is 51022067. The next prime is 51022129. The reversal of 51022081 is 18022015.

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 51022081 - 2⁹ = 51021569 is a prime.

It is a super-2 number, since 2×51022081² = 5206505499141122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51022061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56115 + ... + 57016.

It is an arithmetic number, because the mean of its divisors is an integer number (7127316).

Almost surely, 2^51022081 is an apocalyptic number.

It is an amenable number.

51022081 is a deficient number, since it is larger than the sum of its proper divisors (5996447).

51022081 is a wasteful number, since it uses less digits than its factorization.

51022081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113183.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 51022081 is about 7142.9742404687. The cubic root of 51022081 is about 370.8964893598.

Adding to 51022081 its reverse (18022015), we get a palindrome (69044096).

The spelling of 51022081 in words is "fifty-one million, twenty-two thousand, eighty-one".