51161873 has 16 divisors (see below), whose sum is σ = 61771776. Its totient is φ = 41443920.

The previous prime is 51161849. The next prime is 51161879. The reversal of 51161873 is 37816115.

It is not a de Polignac number, because 51161873 - 2¹⁶ = 51096337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51161879) 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, 6590 + ... + 12072.

It is an arithmetic number, because the mean of its divisors is an integer number (3860736).

Almost surely, 2^51161873 is an apocalyptic number.

It is an amenable number.

51161873 is a deficient number, since it is larger than the sum of its proper divisors (10609903).

51161873 is a wasteful number, since it uses less digits than its factorization.

51161873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564.

The product of its digits is 5040, while the sum is 32.

The square root of 51161873 is about 7152.7528267094. The cubic root of 51161873 is about 371.2349119997.

Adding to 51161873 its reverse (37816115), we get a palindrome (88977988).

The spelling of 51161873 in words is "fifty-one million, one hundred sixty-one thousand, eight hundred seventy-three".