51375117 has 8 divisors (see below), whose sum is σ = 68560000. Its totient is φ = 34220160.

The previous prime is 51375101. The next prime is 51375119. The reversal of 51375117 is 71157315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51375117 - 2⁴ = 51375101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51375119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109 + ... + 10602.

It is an arithmetic number, because the mean of its divisors is an integer number (8570000).

Almost surely, 2^51375117 is an apocalyptic number.

It is an amenable number.

51375117 is a deficient number, since it is larger than the sum of its proper divisors (17184883).

51375117 is a wasteful number, since it uses less digits than its factorization.

51375117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14963.

The product of its digits is 3675, while the sum is 30.

The square root of 51375117 is about 7167.6437550983. The cubic root of 51375117 is about 371.7499692847.

The spelling of 51375117 in words is "fifty-one million, three hundred seventy-five thousand, one hundred seventeen".