51140536 has 8 divisors (see below), whose sum is σ = 95888520. Its totient is φ = 25570264.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140536 is 63504115.

51140536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 51140536.

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 as a sum of consecutive naturals, namely, 3196276 + ... + 3196291.

It is an arithmetic number, because the mean of its divisors is an integer number (11986065).

Almost surely, 2^51140536 is an apocalyptic number.

It is an amenable number.

51140536 is a deficient number, since it is larger than the sum of its proper divisors (44747984).

51140536 is a wasteful number, since it uses less digits than its factorization.

51140536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6392573 (or 6392569 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51140536 is about 7151.2611475180. The cubic root of 51140536 is about 371.1832971267.

The spelling of 51140536 in words is "fifty-one million, one hundred forty thousand, five hundred thirty-six".