51298237 has 2 divisors, whose sum is σ = 51298238. Its totient is φ = 51298236.

The previous prime is 51298229. The next prime is 51298241. The reversal of 51298237 is 73289215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 20894041 = 5514^2 + 4571^2 .

It is a cyclic number.

It is not a de Polignac number, because 51298237 - 2³ = 51298229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51298196 and 51298205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51298217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25649118 + 25649119.

It is an arithmetic number, because the mean of its divisors is an integer number (25649119).

Almost surely, 2^51298237 is an apocalyptic number.

It is an amenable number.

51298237 is a deficient number, since it is larger than the sum of its proper divisors (1).

51298237 is an equidigital number, since it uses as much as digits as its factorization.

51298237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 51298237 is about 7162.2787574905. The cubic root of 51298237 is about 371.5644423386.

It can be divided in two parts, 5129 and 8237, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 51298237 in words is "fifty-one million, two hundred ninety-eight thousand, two hundred thirty-seven".