51171044 has 24 divisors (see below), whose sum is σ = 94385088. Its totient is φ = 24226400.

The previous prime is 51171019. The next prime is 51171073. The reversal of 51171044 is 44017115.

It is a happy number.

51171044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6539 + ... + 12045.

It is an arithmetic number, because the mean of its divisors is an integer number (3932712).

Almost surely, 2^51171044 is an apocalyptic number.

It is an amenable number.

51171044 is a deficient number, since it is larger than the sum of its proper divisors (43214044).

51171044 is a wasteful number, since it uses less digits than its factorization.

51171044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5635 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 51171044 is about 7153.3938798307. The cubic root of 51171044 is about 371.2570925270.

Adding to 51171044 its reverse (44017115), we get a palindrome (95188159).

The spelling of 51171044 in words is "fifty-one million, one hundred seventy-one thousand, forty-four".