51081241 has 8 divisors (see below), whose sum is σ = 52202880. Its totient is φ = 49965552.

The previous prime is 51081221. The next prime is 51081259. The reversal of 51081241 is 14218015.

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 51081241 - 2⁷ = 51081113 is a prime.

It is a super-3 number, since 3×51081241³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51081221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18816 + ... + 21358.

It is an arithmetic number, because the mean of its divisors is an integer number (6525360).

Almost surely, 2^51081241 is an apocalyptic number.

It is an amenable number.

51081241 is a deficient number, since it is larger than the sum of its proper divisors (1121639).

51081241 is a wasteful number, since it uses less digits than its factorization.

51081241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 51081241 is about 7147.1141728673. The cubic root of 51081241 is about 371.0397852341.

Adding to 51081241 its reverse (14218015), we get a palindrome (65299256).

The spelling of 51081241 in words is "fifty-one million, eighty-one thousand, two hundred forty-one".