51670044 has 36 divisors (see below), whose sum is σ = 137486440. Its totient is φ = 16316640.

The previous prime is 51670043. The next prime is 51670097. The reversal of 51670044 is 44007615.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51670043) 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 11 ways as a sum of consecutive naturals, for example, 37087 + ... + 38454.

Almost surely, 2^51670044 is an apocalyptic number.

It is an amenable number.

51670044 is an abundant number, since it is smaller than the sum of its proper divisors (85816396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51670044 is a wasteful number, since it uses less digits than its factorization.

51670044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75570 (or 75565 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 51670044 is about 7188.1878105681. The cubic root of 51670044 is about 372.4599755804.

Adding to 51670044 its reverse (44007615), we get a palindrome (95677659).

The spelling of 51670044 in words is "fifty-one million, six hundred seventy thousand, forty-four".