51140173 has 24 divisors (see below), whose sum is σ = 62118144. Its totient is φ = 41932800.

The previous prime is 51140171. The next prime is 51140203. The reversal of 51140173 is 37104115.

It is not a de Polignac number, because 51140173 - 2¹ = 51140171 is a prime.

It is a super-3 number, since 3×51140173³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51140171) 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, 198861 + ... + 199117.

It is an arithmetic number, because the mean of its divisors is an integer number (2588256).

Almost surely, 2^51140173 is an apocalyptic number.

It is an amenable number.

51140173 is a deficient number, since it is larger than the sum of its proper divisors (10977971).

51140173 is a wasteful number, since it uses less digits than its factorization.

51140173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 51140173 is about 7151.2357673342. The cubic root of 51140173 is about 371.1824188941.

Adding to 51140173 its reverse (37104115), we get a palindrome (88244288).

The spelling of 51140173 in words is "fifty-one million, one hundred forty thousand, one hundred seventy-three".