51046687 has 2 divisors, whose sum is σ = 51046688. Its totient is φ = 51046686.

The previous prime is 51046663. The next prime is 51046693. The reversal of 51046687 is 78664015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51046687 - 2¹¹ = 51044639 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51046627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25523343 + 25523344.

It is an arithmetic number, because the mean of its divisors is an integer number (25523344).

Almost surely, 2^51046687 is an apocalyptic number.

51046687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51046687 is an equidigital number, since it uses as much as digits as its factorization.

51046687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 51046687 is about 7144.6964246216. The cubic root of 51046687 is about 370.9561028458.

The spelling of 51046687 in words is "fifty-one million, forty-six thousand, six hundred eighty-seven".