51295138 has 4 divisors (see below), whose sum is σ = 76942710. Its totient is φ = 25647568.

The previous prime is 51295099. The next prime is 51295159. The reversal of 51295138 is 83159215.

51295138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 50737129 + 558009 = 7123^2 + 747^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12823783 + ... + 12823786.

Almost surely, 2^51295138 is an apocalyptic number.

51295138 is a deficient number, since it is larger than the sum of its proper divisors (25647572).

51295138 is a wasteful number, since it uses less digits than its factorization.

51295138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25647571.

The product of its digits is 10800, while the sum is 34.

The square root of 51295138 is about 7162.0624124619. The cubic root of 51295138 is about 371.5569599411.

The spelling of 51295138 in words is "fifty-one million, two hundred ninety-five thousand, one hundred thirty-eight".