51840273 has 8 divisors (see below), whose sum is σ = 69371008. Its totient is φ = 34434864.

The previous prime is 51840253. The next prime is 51840281. The reversal of 51840273 is 37204815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51840273 - 2⁹ = 51839761 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 51840273.

It is not an unprimeable number, because it can be changed into a prime (51840203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30361 + ... + 32022.

It is an arithmetic number, because the mean of its divisors is an integer number (8671376).

Almost surely, 2^51840273 is an apocalyptic number.

It is an amenable number.

51840273 is a deficient number, since it is larger than the sum of its proper divisors (17530735).

51840273 is a wasteful number, since it uses less digits than its factorization.

51840273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62663.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 51840273 is about 7200.0189583084. The cubic root of 51840273 is about 372.8685552461.

The spelling of 51840273 in words is "fifty-one million, eight hundred forty thousand, two hundred seventy-three".