51388082 has 4 divisors (see below), whose sum is σ = 77082126. Its totient is φ = 25694040.

The previous prime is 51388069. The next prime is 51388091. The reversal of 51388082 is 28088315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39075001 + 12313081 = 6251^2 + 3509^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12847019 + ... + 12847022.

Almost surely, 2^51388082 is an apocalyptic number.

51388082 is a deficient number, since it is larger than the sum of its proper divisors (25694044).

51388082 is a wasteful number, since it uses less digits than its factorization.

51388082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25694043.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 51388082 is about 7168.5481096244. The cubic root of 51388082 is about 371.7812382028.

The spelling of 51388082 in words is "fifty-one million, three hundred eighty-eight thousand, eighty-two".