51075872 has 12 divisors (see below), whose sum is σ = 100555686. Its totient is φ = 25537920.

The previous prime is 51075863. The next prime is 51075881. The reversal of 51075872 is 27857015.

It is an interprime number because it is at equal distance from previous prime (51075863) and next prime (51075881).

It can be written as a sum of positive squares in only one way, i.e., 39488656 + 11587216 = 6284^2 + 3404^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 798029 + ... + 798092.

Almost surely, 2^51075872 is an apocalyptic number.

It is an amenable number.

51075872 is a deficient number, since it is larger than the sum of its proper divisors (49479814).

51075872 is a wasteful number, since it uses less digits than its factorization.

51075872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596131 (or 1596123 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 51075872 is about 7146.7385568523. The cubic root of 51075872 is about 371.0267851427.

The spelling of 51075872 in words is "fifty-one million, seventy-five thousand, eight hundred seventy-two".