51005841 has 4 divisors (see below), whose sum is σ = 68007792. Its totient is φ = 34003892.

The previous prime is 51005813. The next prime is 51005849. The reversal of 51005841 is 14850015.

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 51005841 - 2⁶ = 51005777 is a prime.

It is a super-2 number, since 2×51005841² = 5203191632234562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51005849) 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, 8500971 + ... + 8500976.

It is an arithmetic number, because the mean of its divisors is an integer number (17001948).

Almost surely, 2^51005841 is an apocalyptic number.

It is an amenable number.

51005841 is a deficient number, since it is larger than the sum of its proper divisors (17001951).

51005841 is a wasteful number, since it uses less digits than its factorization.

51005841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17001950.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 51005841 is about 7141.8373686328. The cubic root of 51005841 is about 370.8571338622.

Adding to 51005841 its reverse (14850015), we get a palindrome (65855856).

It can be divided in two parts, 5 and 1005841, that multiplied together give a palindrome (5029205).

The spelling of 51005841 in words is "fifty-one million, five thousand, eight hundred forty-one".