51188085 has 32 divisors (see below), whose sum is σ = 98004480. Its totient is φ = 25199424.

The previous prime is 51188077. The next prime is 51188101. The reversal of 51188085 is 58088115.

It is not a de Polignac number, because 51188085 - 2³ = 51188077 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12829 + ... + 16338.

It is an arithmetic number, because the mean of its divisors is an integer number (3062640).

Almost surely, 2^51188085 is an apocalyptic number.

It is an amenable number.

51188085 is a deficient number, since it is larger than the sum of its proper divisors (46816395).

51188085 is a wasteful number, since it uses less digits than its factorization.

51188085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29194 (or 29188 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 51188085 is about 7154.5848936189. The cubic root of 51188085 is about 371.2983000111.

It can be divided in two parts, 5118 and 8085, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 51188085 in words is "fifty-one million, one hundred eighty-eight thousand, eighty-five".