51913044 has 36 divisors (see below), whose sum is σ = 131747616. Its totient is φ = 17235408.

The previous prime is 51913009. The next prime is 51913049. The reversal of 51913044 is 44031915.

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

It is a junction number, because it is equal to n+sod(n) for n = 51912999 and 51913017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51913049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6727 + ... + 12209.

It is an arithmetic number, because the mean of its divisors is an integer number (3659656).

Almost surely, 2^51913044 is an apocalyptic number.

It is an amenable number.

51913044 is an abundant number, since it is smaller than the sum of its proper divisors (79834572).

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

51913044 is a wasteful number, since it uses less digits than its factorization.

51913044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756 (or 5751 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 51913044 is about 7205.0707144344. The cubic root of 51913044 is about 373.0429456023.

Adding to 51913044 its reverse (44031915), we get a palindrome (95944959).

The spelling of 51913044 in words is "fifty-one million, nine hundred thirteen thousand, forty-four".