51313404 has 48 divisors (see below), whose sum is σ = 122411520. Its totient is φ = 16726080.

The previous prime is 51313403. The next prime is 51313417. The reversal of 51313404 is 40431315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194977 + ... + 195239.

It is an arithmetic number, because the mean of its divisors is an integer number (2550240).

Almost surely, 2^51313404 is an apocalyptic number.

It is an amenable number.

51313404 is an abundant number, since it is smaller than the sum of its proper divisors (71098116).

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

51313404 is a wasteful number, since it uses less digits than its factorization.

51313404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51313404 is about 7163.3374903044. The cubic root of 51313404 is about 371.6010580386.

Adding to 51313404 its reverse (40431315), we get a palindrome (91744719).

The spelling of 51313404 in words is "fifty-one million, three hundred thirteen thousand, four hundred four".