51240673 has 8 divisors (see below), whose sum is σ = 56025216. Its totient is φ = 46477200.

The previous prime is 51240647. The next prime is 51240677. The reversal of 51240673 is 37604215.

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

It is a de Polignac number, because none of the positive numbers 2^k-51240673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51240677) 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, 63 + ... + 10123.

It is an arithmetic number, because the mean of its divisors is an integer number (7003152).

Almost surely, 2^51240673 is an apocalyptic number.

It is an amenable number.

51240673 is a deficient number, since it is larger than the sum of its proper divisors (4784543).

51240673 is a wasteful number, since it uses less digits than its factorization.

51240673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 51240673 is about 7158.2590760603. The cubic root of 51240673 is about 371.4254074047.

Adding to 51240673 its reverse (37604215), we get a palindrome (88844888).

The spelling of 51240673 in words is "fifty-one million, two hundred forty thousand, six hundred seventy-three".