51000575 has 24 divisors (see below), whose sum is σ = 65594016. Its totient is φ = 39312000.

The previous prime is 51000571. The next prime is 51000619. The reversal of 51000575 is 57500015.

It is not a de Polignac number, because 51000575 - 2² = 51000571 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51000575.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80510 + ... + 81140.

It is an arithmetic number, because the mean of its divisors is an integer number (2733084).

Almost surely, 2^51000575 is an apocalyptic number.

51000575 is a deficient number, since it is larger than the sum of its proper divisors (14593441).

51000575 is a wasteful number, since it uses less digits than its factorization.

51000575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 51000575 is about 7141.4686864818. The cubic root of 51000575 is about 370.8443706123.

The spelling of 51000575 in words is "fifty-one million, five hundred seventy-five", and thus it is an aban number.