51347845 has 8 divisors (see below), whose sum is σ = 64296576. Its totient is φ = 39292176.

The previous prime is 51347833. The next prime is 51347887. The reversal of 51347845 is 54874315.

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

It is a cyclic number.

It is not a de Polignac number, because 51347845 - 2²¹ = 49250693 is a prime.

It is a super-2 number, since 2×51347845² = 5273202372288050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223137 + ... + 223366.

It is an arithmetic number, because the mean of its divisors is an integer number (8037072).

Almost surely, 2^51347845 is an apocalyptic number.

It is an amenable number.

51347845 is a deficient number, since it is larger than the sum of its proper divisors (12948731).

51347845 is a wasteful number, since it uses less digits than its factorization.

51347845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446531.

The product of its digits is 67200, while the sum is 37.

The square root of 51347845 is about 7165.7410642585. The cubic root of 51347845 is about 371.6841776445.

The spelling of 51347845 in words is "fifty-one million, three hundred forty-seven thousand, eight hundred forty-five".