51648873 has 16 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 32316416.

The previous prime is 51648853. The next prime is 51648881. The reversal of 51648873 is 37884615.

It is a cyclic number.

It is not a de Polignac number, because 51648873 - 2⁵ = 51648841 is a prime.

It is a super-3 number, since 3×51648873³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (51648803) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 20161 + ... + 22577.

It is an arithmetic number, because the mean of its divisors is an integer number (4570020).

Almost surely, 2^51648873 is an apocalyptic number.

It is an amenable number.

51648873 is a deficient number, since it is larger than the sum of its proper divisors (21471447).

51648873 is a wasteful number, since it uses less digits than its factorization.

51648873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its digits is 161280, while the sum is 42.

The square root of 51648873 is about 7186.7150353969. The cubic root of 51648873 is about 372.4090987296.

The spelling of 51648873 in words is "fifty-one million, six hundred forty-eight thousand, eight hundred seventy-three".