51606085 has 8 divisors (see below), whose sum is σ = 63437976. Its totient is φ = 40277760.

The previous prime is 51606059. The next prime is 51606127. The reversal of 51606085 is 58060615.

It can be written as a sum of positive squares in 4 ways, for example, as 1153476 + 50452609 = 1074^2 + 7103^2 .

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

It is not a de Polignac number, because 51606085 - 2¹⁷ = 51475013 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, 125664 + ... + 126073.

It is an arithmetic number, because the mean of its divisors is an integer number (7929747).

Almost surely, 2^51606085 is an apocalyptic number.

It is an amenable number.

51606085 is a deficient number, since it is larger than the sum of its proper divisors (11831891).

51606085 is a wasteful number, since it uses less digits than its factorization.

51606085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251783.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 51606085 is about 7183.7375369650. The cubic root of 51606085 is about 372.3062307681.

The spelling of 51606085 in words is "fifty-one million, six hundred six thousand, eighty-five".