51578673 has 16 divisors (see below), whose sum is σ = 75540480. Its totient is φ = 31158864.

The previous prime is 51578641. The next prime is 51578687. The reversal of 51578673 is 37687515.

It is not a de Polignac number, because 51578673 - 2⁵ = 51578641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51578603) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18361 + ... + 20982.

It is an arithmetic number, because the mean of its divisors is an integer number (4721280).

Almost surely, 2^51578673 is an apocalyptic number.

It is an amenable number.

51578673 is a deficient number, since it is larger than the sum of its proper divisors (23961807).

51578673 is a wasteful number, since it uses less digits than its factorization.

51578673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39388.

The product of its digits is 176400, while the sum is 42.

The square root of 51578673 is about 7181.8293630523. The cubic root of 51578673 is about 372.2402988408.

The spelling of 51578673 in words is "fifty-one million, five hundred seventy-eight thousand, six hundred seventy-three".