51374147 has 4 divisors (see below), whose sum is σ = 56044536. Its totient is φ = 46703760.

The previous prime is 51374143. The next prime is 51374173. The reversal of 51374147 is 74147315.

51374147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51374147 - 2² = 51374143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51374143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335178 + ... + 2335199.

It is an arithmetic number, because the mean of its divisors is an integer number (14011134).

Almost surely, 2^51374147 is an apocalyptic number.

51374147 is a deficient number, since it is larger than the sum of its proper divisors (4670389).

51374147 is a wasteful number, since it uses less digits than its factorization.

51374147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4670388.

The product of its digits is 11760, while the sum is 32.

The square root of 51374147 is about 7167.5760895857. The cubic root of 51374147 is about 371.7476296324.

The spelling of 51374147 in words is "fifty-one million, three hundred seventy-four thousand, one hundred forty-seven".