51375311 has 4 divisors (see below), whose sum is σ = 55327272. Its totient is φ = 47423352.

The previous prime is 51375299. The next prime is 51375329. The reversal of 51375311 is 11357315.

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

It is a cyclic number.

It is not a de Polignac number, because 51375311 - 2¹⁰ = 51374287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975961 + ... + 1975986.

It is an arithmetic number, because the mean of its divisors is an integer number (13831818).

Almost surely, 2^51375311 is an apocalyptic number.

51375311 is a deficient number, since it is larger than the sum of its proper divisors (3951961).

51375311 is a wasteful number, since it uses less digits than its factorization.

51375311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3951960.

The product of its digits is 1575, while the sum is 26.

The square root of 51375311 is about 7167.6572881242. The cubic root of 51375311 is about 371.7504372117.

The spelling of 51375311 in words is "fifty-one million, three hundred seventy-five thousand, three hundred eleven".