51574687 has 2 divisors, whose sum is σ = 51574688. Its totient is φ = 51574686.

The previous prime is 51574681. The next prime is 51574697. The reversal of 51574687 is 78647515.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51574687 - 2¹¹ = 51572639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51574681) 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, 25787343 + 25787344.

It is an arithmetic number, because the mean of its divisors is an integer number (25787344).

Almost surely, 2^51574687 is an apocalyptic number.

51574687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51574687 is an equidigital number, since it uses as much as digits as its factorization.

51574687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 43.

The square root of 51574687 is about 7181.5518517936. The cubic root of 51574687 is about 372.2307096833.

The spelling of 51574687 in words is "fifty-one million, five hundred seventy-four thousand, six hundred eighty-seven".