51559087 has 4 divisors (see below), whose sum is σ = 51593320. Its totient is φ = 51524856.

The previous prime is 51559073. The next prime is 51559133. The reversal of 51559087 is 78095515.

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 51559087 - 2⁷ = 51558959 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 (51559007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14748 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (12898330).

Almost surely, 2^51559087 is an apocalyptic number.

51559087 is a deficient number, since it is larger than the sum of its proper divisors (34233).

51559087 is a wasteful number, since it uses less digits than its factorization.

51559087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34232.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 51559087 is about 7180.4656534239. The cubic root of 51559087 is about 372.1931758660.

The spelling of 51559087 in words is "fifty-one million, five hundred fifty-nine thousand, eighty-seven".