51344604 has 60 divisors (see below), whose sum is σ = 137884824. Its totient is φ = 16648416.

The previous prime is 51344603. The next prime is 51344611. The reversal of 51344604 is 40644315.

51344604 is a `hidden beast` number, since 5 + 13 + 44 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51344603) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9847 + ... + 14129.

Almost surely, 2^51344604 is an apocalyptic number.

51344604 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51344604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68942412).

51344604 is an abundant number, since it is smaller than the sum of its proper divisors (86540220).

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

51344604 is a wasteful number, since it uses less digits than its factorization.

51344604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4325 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 51344604 is about 7165.5149152032. The cubic root of 51344604 is about 371.6763574282.

Adding to 51344604 its reverse (40644315), we get a palindrome (91988919).

The spelling of 51344604 in words is "fifty-one million, three hundred forty-four thousand, six hundred four".