51271536 has 40 divisors (see below), whose sum is σ = 137022480. Its totient is φ = 16500736.

The previous prime is 51271513. The next prime is 51271543. The reversal of 51271536 is 63517215.

51271536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 17025 + ... + 19808.

It is an arithmetic number, because the mean of its divisors is an integer number (3425562).

Almost surely, 2^51271536 is an apocalyptic number.

It is an amenable number.

51271536 is an abundant number, since it is smaller than the sum of its proper divisors (85750944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51271536 is a wasteful number, since it uses less digits than its factorization.

51271536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36873 (or 36867 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 51271536 is about 7160.4145131410. The cubic root of 51271536 is about 371.4999640732.

The spelling of 51271536 in words is "fifty-one million, two hundred seventy-one thousand, five hundred thirty-six".