51340345 has 32 divisors (see below), whose sum is σ = 72495360. Its totient is φ = 34179840.

The previous prime is 51340327. The next prime is 51340379. The reversal of 51340345 is 54304315.

51340345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51340345 - 2⁷ = 51340217 is a prime.

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 in 31 ways as a sum of consecutive naturals, for example, 296679 + ... + 296851.

It is an arithmetic number, because the mean of its divisors is an integer number (2265480).

Almost surely, 2^51340345 is an apocalyptic number.

It is an amenable number.

51340345 is a deficient number, since it is larger than the sum of its proper divisors (21155015).

51340345 is a wasteful number, since it uses less digits than its factorization.

51340345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 51340345 is about 7165.2177217444. The cubic root of 51340345 is about 371.6660803769. Note that the first 3 decimals are identical.

The spelling of 51340345 in words is "fifty-one million, three hundred forty thousand, three hundred forty-five".