51353138 has 4 divisors (see below), whose sum is σ = 77029710. Its totient is φ = 25676568.

The previous prime is 51353123. The next prime is 51353149. The reversal of 51353138 is 83135315.

51353138 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., 51079609 + 273529 = 7147^2 + 523^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51353138.

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, 12838283 + ... + 12838286.

Almost surely, 2^51353138 is an apocalyptic number.

51353138 is a deficient number, since it is larger than the sum of its proper divisors (25676572).

51353138 is a wasteful number, since it uses less digits than its factorization.

51353138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25676571.

The product of its digits is 5400, while the sum is 29.

The square root of 51353138 is about 7166.1103815110. The cubic root of 51353138 is about 371.6969484288.

The spelling of 51353138 in words is "fifty-one million, three hundred fifty-three thousand, one hundred thirty-eight".