51670887 has 8 divisors (see below), whose sum is σ = 69390720. Its totient is φ = 34199160.

The previous prime is 51670867. The next prime is 51670891. The reversal of 51670887 is 78807615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51670887 - 2⁸ = 51670631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51670807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61539 + ... + 62372.

It is an arithmetic number, because the mean of its divisors is an integer number (8673840).

Almost surely, 2^51670887 is an apocalyptic number.

51670887 is a deficient number, since it is larger than the sum of its proper divisors (17719833).

51670887 is a wasteful number, since it uses less digits than its factorization.

51670887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124053.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 51670887 is about 7188.2464481958. The cubic root of 51670887 is about 372.4620011386.

The spelling of 51670887 in words is "fifty-one million, six hundred seventy thousand, eight hundred eighty-seven".