51340117 has 4 divisors (see below), whose sum is σ = 53572320. Its totient is φ = 49107916.

The previous prime is 51340087. The next prime is 51340129. The reversal of 51340117 is 71104315.

51340117 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71104315 = 5 ⋅14220863.

It is a cyclic number.

It is not a de Polignac number, because 51340117 - 2¹¹ = 51338069 is a prime.

It is a super-2 number, since 2×51340117² = 5271615227147378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1116067 + ... + 1116112.

It is an arithmetic number, because the mean of its divisors is an integer number (13393080).

Almost surely, 2^51340117 is an apocalyptic number.

It is an amenable number.

51340117 is a deficient number, since it is larger than the sum of its proper divisors (2232203).

51340117 is a wasteful number, since it uses less digits than its factorization.

51340117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2232202.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 51340117 is about 7165.2018115333. The cubic root of 51340117 is about 371.6655301924.

The spelling of 51340117 in words is "fifty-one million, three hundred forty thousand, one hundred seventeen".