51559085 has 8 divisors (see below), whose sum is σ = 61910136. Its totient is φ = 41221120.

The previous prime is 51559073. The next prime is 51559133. The reversal of 51559085 is 58095515.

It can be written as a sum of positive squares in 4 ways, for example, as 10355524 + 41203561 = 3218^2 + 6419^2 .

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

It is not a de Polignac number, because 51559085 - 2⁴ = 51559069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11345 + ... + 15225.

It is an arithmetic number, because the mean of its divisors is an integer number (7738767).

Almost surely, 2^51559085 is an apocalyptic number.

It is an amenable number.

51559085 is a deficient number, since it is larger than the sum of its proper divisors (10351051).

51559085 is a wasteful number, since it uses less digits than its factorization.

51559085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543.

The product of its (nonzero) digits is 45000, while the sum is 38.

The square root of 51559085 is about 7180.4655141571. The cubic root of 51559085 is about 372.1931710535.

The spelling of 51559085 in words is "fifty-one million, five hundred fifty-nine thousand, eighty-five".