51027637 has 2 divisors, whose sum is σ = 51027638. Its totient is φ = 51027636.

The previous prime is 51027631. The next prime is 51027649. The reversal of 51027637 is 73672015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30316036 + 20711601 = 5506^2 + 4551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51027637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51027599 and 51027608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51027631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25513818 + 25513819.

It is an arithmetic number, because the mean of its divisors is an integer number (25513819).

Almost surely, 2^51027637 is an apocalyptic number.

It is an amenable number.

51027637 is a deficient number, since it is larger than the sum of its proper divisors (1).

51027637 is an equidigital number, since it uses as much as digits as its factorization.

51027637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 51027637 is about 7143.3631435060. The cubic root of 51027637 is about 370.9099516756.

The spelling of 51027637 in words is "fifty-one million, twenty-seven thousand, six hundred thirty-seven".