51700837 has 2 divisors, whose sum is σ = 51700838. Its totient is φ = 51700836.

The previous prime is 51700813. The next prime is 51700879. The reversal of 51700837 is 73800715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51351556 + 349281 = 7166^2 + 591^2 .

It is a cyclic number.

It is not a de Polignac number, because 51700837 - 2¹¹ = 51698789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51700799 and 51700808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51700807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25850418 + 25850419.

It is an arithmetic number, because the mean of its divisors is an integer number (25850419).

Almost surely, 2^51700837 is an apocalyptic number.

It is an amenable number.

51700837 is a deficient number, since it is larger than the sum of its proper divisors (1).

51700837 is an equidigital number, since it uses as much as digits as its factorization.

51700837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 51700837 is about 7190.3294083095. The cubic root of 51700837 is about 372.5339506314.

The spelling of 51700837 in words is "fifty-one million, seven hundred thousand, eight hundred thirty-seven".