51404464 has 40 divisors (see below), whose sum is σ = 107725248. Its totient is φ = 23669760.

The previous prime is 51404459. The next prime is 51404467. The reversal of 51404464 is 46440415.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51404467) 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 7 ways as a sum of consecutive naturals, for example, 10774 + ... + 14794.

Almost surely, 2^51404464 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 51404464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53862624).

51404464 is an abundant number, since it is smaller than the sum of its proper divisors (56320784).

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

51404464 is a wasteful number, since it uses less digits than its factorization.

51404464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093 (or 4087 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 51404464 is about 7169.6906488356. The cubic root of 51404464 is about 371.8207407030.

Adding to 51404464 its reverse (46440415), we get a palindrome (97844879).

It can be divided in two parts, 5140 and 4464, that added together give a square (9604 = 98²).

The spelling of 51404464 in words is "fifty-one million, four hundred four thousand, four hundred sixty-four".