51300987 has 8 divisors (see below), whose sum is σ = 68434704. Its totient is φ = 34183968.

The previous prime is 51300961. The next prime is 51300989. The reversal of 51300987 is 78900315.

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

It is not a de Polignac number, because 51300987 - 2⁷ = 51300859 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51300989) 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, 8473 + ... + 13205.

It is an arithmetic number, because the mean of its divisors is an integer number (8554338).

Almost surely, 2^51300987 is an apocalyptic number.

51300987 is a deficient number, since it is larger than the sum of its proper divisors (17133717).

51300987 is a wasteful number, since it uses less digits than its factorization.

51300987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8349.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 51300987 is about 7162.4707329245. The cubic root of 51300987 is about 371.5710818387.

The spelling of 51300987 in words is "fifty-one million, three hundred thousand, nine hundred eighty-seven".