51307087 has 8 divisors (see below), whose sum is σ = 58162160. Its totient is φ = 44867520.

The previous prime is 51307079. The next prime is 51307093. The reversal of 51307087 is 78070315.

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

It is a cyclic number.

It is not a de Polignac number, because 51307087 - 2³ = 51307079 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 (51307007) 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, 103614 + ... + 104107.

It is an arithmetic number, because the mean of its divisors is an integer number (7270270).

Almost surely, 2^51307087 is an apocalyptic number.

51307087 is a deficient number, since it is larger than the sum of its proper divisors (6855073).

51307087 is a wasteful number, since it uses less digits than its factorization.

51307087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207753.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 51307087 is about 7162.8965509771. The cubic root of 51307087 is about 371.5858086104.

The spelling of 51307087 in words is "fifty-one million, three hundred seven thousand, eighty-seven".