51585808 has 10 divisors (see below), whose sum is σ = 99947534. Its totient is φ = 25792896.

The previous prime is 51585791. The next prime is 51585823. The reversal of 51585808 is 80858515.

It can be written as a sum of positive squares in only one way, i.e., 38539264 + 13046544 = 6208^2 + 3612^2 .

It is a super-2 number, since 2×51585808² = 5322191174025728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612041 + ... + 1612072.

Almost surely, 2^51585808 is an apocalyptic number.

It is an amenable number.

51585808 is a deficient number, since it is larger than the sum of its proper divisors (48361726).

51585808 is a wasteful number, since it uses less digits than its factorization.

51585808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224121 (or 3224115 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 40.

The square root of 51585808 is about 7182.3260856076. The cubic root of 51585808 is about 372.2574623434.

The spelling of 51585808 in words is "fifty-one million, five hundred eighty-five thousand, eight hundred eight".