51628087 has 4 divisors (see below), whose sum is σ = 59003536. Its totient is φ = 44252640.

The previous prime is 51628067. The next prime is 51628103. The reversal of 51628087 is 78082615.

51628087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51628087 - 2¹¹ = 51626039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51628007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3687714 + ... + 3687727.

It is an arithmetic number, because the mean of its divisors is an integer number (14750884).

Almost surely, 2^51628087 is an apocalyptic number.

51628087 is a deficient number, since it is larger than the sum of its proper divisors (7375449).

51628087 is an equidigital number, since it uses as much as digits as its factorization.

51628087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7375448.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 51628087 is about 7185.2687493232. The cubic root of 51628087 is about 372.3591335594.

The spelling of 51628087 in words is "fifty-one million, six hundred twenty-eight thousand, eighty-seven".