51140518 has 16 divisors (see below), whose sum is σ = 90122256. Its totient is φ = 21457440.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140518 is 81504115.

It is a happy number.

51140518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51140492 and 51140501.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 89121 + ... + 89692.

It is an arithmetic number, because the mean of its divisors is an integer number (5632641).

Almost surely, 2^51140518 is an apocalyptic number.

51140518 is a deficient number, since it is larger than the sum of its proper divisors (38981738).

51140518 is a wasteful number, since it uses less digits than its factorization.

51140518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178839.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 51140518 is about 7151.2598889986. The cubic root of 51140518 is about 371.1832535781.

The spelling of 51140518 in words is "fifty-one million, one hundred forty thousand, five hundred eighteen".