51340807 has 16 divisors (see below), whose sum is σ = 61931520. Its totient is φ = 41608512.

The previous prime is 51340801. The next prime is 51340811. The reversal of 51340807 is 70804315.

51340807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 6-Lehmer number, since φ(51340807) divides (51340807-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 51340807 - 2¹⁵ = 51308039 is a prime.

It is a super-2 number, since 2×51340807² = 5271756926822498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51340801) 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 15 ways as a sum of consecutive naturals, for example, 12538 + ... + 16120.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

It is a Poulet number, since it divides 2^51340806-1.

Almost surely, 2^51340807 is an apocalyptic number.

51340807 is the 3583-rd decagonal number.

51340807 is a deficient number, since it is larger than the sum of its proper divisors (10590713).

51340807 is a wasteful number, since it uses less digits than its factorization.

51340807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3702.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 51340807 is about 7165.2499607481. The cubic root of 51340807 is about 371.6671952196.

The spelling of 51340807 in words is "fifty-one million, three hundred forty thousand, eight hundred seven".