51630679 has 2 divisors, whose sum is σ = 51630680. Its totient is φ = 51630678.

The previous prime is 51630647. The next prime is 51630697. The reversal of 51630679 is 97603615.

Together with next prime (51630697) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51630679 - 2⁵ = 51630647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51630079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25815339 + 25815340.

It is an arithmetic number, because the mean of its divisors is an integer number (25815340).

Almost surely, 2^51630679 is an apocalyptic number.

51630679 is a deficient number, since it is larger than the sum of its proper divisors (1).

51630679 is an equidigital number, since it uses as much as digits as its factorization.

51630679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 51630679 is about 7185.4491160957. The cubic root of 51630679 is about 372.3653649138.

The spelling of 51630679 in words is "fifty-one million, six hundred thirty thousand, six hundred seventy-nine".