51638295 has 32 divisors (see below), whose sum is σ = 87379200. Its totient is φ = 25968384.

The previous prime is 51638291. The next prime is 51638297. The reversal of 51638295 is 59283615.

51638295 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51638295 - 2² = 51638291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51638291) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 116344 + ... + 116786.

It is an arithmetic number, because the mean of its divisors is an integer number (2730600).

Almost surely, 2^51638295 is an apocalyptic number.

51638295 is a deficient number, since it is larger than the sum of its proper divisors (35740905).

51638295 is a wasteful number, since it uses less digits than its factorization.

51638295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its digits is 64800, while the sum is 39.

The square root of 51638295 is about 7185.9790564682. The cubic root of 51638295 is about 372.3836731189.

The spelling of 51638295 in words is "fifty-one million, six hundred thirty-eight thousand, two hundred ninety-five".