51833681 has 2 divisors, whose sum is σ = 51833682. Its totient is φ = 51833680.

The previous prime is 51833671. The next prime is 51833693. The reversal of 51833681 is 18633815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41075281 + 10758400 = 6409^2 + 3280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51833681 is a prime.

It is a super-2 number, since 2×51833681² = 5373460972019522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51833611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25916840 + 25916841.

It is an arithmetic number, because the mean of its divisors is an integer number (25916841).

Almost surely, 2^51833681 is an apocalyptic number.

It is an amenable number.

51833681 is a deficient number, since it is larger than the sum of its proper divisors (1).

51833681 is an equidigital number, since it uses as much as digits as its factorization.

51833681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 51833681 is about 7199.5611671823. The cubic root of 51833681 is about 372.8527499428.

The spelling of 51833681 in words is "fifty-one million, eight hundred thirty-three thousand, six hundred eighty-one".