51015345 has 16 divisors (see below), whose sum is σ = 81829440. Its totient is φ = 27139904.

The previous prime is 51015313. The next prime is 51015383. The reversal of 51015345 is 54351015.

51015345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51015345 - 2⁵ = 51015313 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 15 ways as a sum of consecutive naturals, for example, 2227 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (5114340).

Almost surely, 2^51015345 is an apocalyptic number.

It is an amenable number.

51015345 is a deficient number, since it is larger than the sum of its proper divisors (30814095).

51015345 is a wasteful number, since it uses less digits than its factorization.

51015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8544.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 51015345 is about 7142.5027126351. The cubic root of 51015345 is about 370.8801665661.

It can be divided in two parts, 51015 and 345, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 51015345 in words is "fifty-one million, fifteen thousand, three hundred forty-five".