51637087 has 2 divisors, whose sum is σ = 51637088. Its totient is φ = 51637086.

The previous prime is 51637063. The next prime is 51637099. The reversal of 51637087 is 78073615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51637087 - 2¹¹ = 51635039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51637387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25818543 + 25818544.

It is an arithmetic number, because the mean of its divisors is an integer number (25818544).

Almost surely, 2^51637087 is an apocalyptic number.

51637087 is a deficient number, since it is larger than the sum of its proper divisors (1).

51637087 is an equidigital number, since it uses as much as digits as its factorization.

51637087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 51637087 is about 7185.8950034077. The cubic root of 51637087 is about 372.3807693116.

The spelling of 51637087 in words is "fifty-one million, six hundred thirty-seven thousand, eighty-seven".