51086437 has 2 divisors, whose sum is σ = 51086438. Its totient is φ = 51086436.

The previous prime is 51086423. The next prime is 51086449. The reversal of 51086437 is 73468015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 19793601 = 5594^2 + 4449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51086437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51086407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25543218 + 25543219.

It is an arithmetic number, because the mean of its divisors is an integer number (25543219).

Almost surely, 2^51086437 is an apocalyptic number.

It is an amenable number.

51086437 is a deficient number, since it is larger than the sum of its proper divisors (1).

51086437 is an equidigital number, since it uses as much as digits as its factorization.

51086437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 51086437 is about 7147.4776669815. The cubic root of 51086437 is about 371.0523655690.

The spelling of 51086437 in words is "fifty-one million, eighty-six thousand, four hundred thirty-seven".