51120173 has 16 divisors (see below), whose sum is σ = 58605120. Its totient is φ = 44173056.

The previous prime is 51120149. The next prime is 51120211. The reversal of 51120173 is 37102115.

It is a cyclic number.

It is not a de Polignac number, because 51120173 - 2¹⁰ = 51119149 is a prime.

It is a super-2 number, since 2×51120173² = 5226544175099858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49658 + ... + 50676.

It is an arithmetic number, because the mean of its divisors is an integer number (3662820).

Almost surely, 2^51120173 is an apocalyptic number.

It is an amenable number.

51120173 is a deficient number, since it is larger than the sum of its proper divisors (7484947).

51120173 is a wasteful number, since it uses less digits than its factorization.

51120173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 51120173 is about 7149.8372708755. The cubic root of 51120173 is about 371.1340250001.

Adding to 51120173 its reverse (37102115), we get a palindrome (88222288).

The spelling of 51120173 in words is "fifty-one million, one hundred twenty thousand, one hundred seventy-three".