51344004 has 48 divisors (see below), whose sum is σ = 131604480. Its totient is φ = 15507360.

The previous prime is 51344003. The next prime is 51344017. The reversal of 51344004 is 40044315.

It is not an unprimeable number, because it can be changed into a prime (51344003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349 + ... + 10139.

It is an arithmetic number, because the mean of its divisors is an integer number (2741760).

Almost surely, 2^51344004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51344004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65802240).

51344004 is an abundant number, since it is smaller than the sum of its proper divisors (80260476).

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

51344004 is a wasteful number, since it uses less digits than its factorization.

51344004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9840 (or 9838 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 51344004 is about 7165.4730478873. The cubic root of 51344004 is about 371.6749096507.

Adding to 51344004 its reverse (40044315), we get a palindrome (91388319).

The spelling of 51344004 in words is "fifty-one million, three hundred forty-four thousand, four".