51604718 has 8 divisors (see below), whose sum is σ = 84444120. Its totient is φ = 23456680.

The previous prime is 51604711. The next prime is 51604733. The reversal of 51604718 is 81740615.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51604711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172813 + ... + 1172856.

It is an arithmetic number, because the mean of its divisors is an integer number (10555515).

Almost surely, 2^51604718 is an apocalyptic number.

51604718 is a deficient number, since it is larger than the sum of its proper divisors (32839402).

51604718 is a wasteful number, since it uses less digits than its factorization.

51604718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345682.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 51604718 is about 7183.6423908767. The cubic root of 51604718 is about 372.3029433837.

The spelling of 51604718 in words is "fifty-one million, six hundred four thousand, seven hundred eighteen".