51464443 has 4 divisors (see below), whose sum is σ = 51792400. Its totient is φ = 51136488.

The previous prime is 51464429. The next prime is 51464453. The reversal of 51464443 is 34446415.

51464443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34446415 = 5 ⋅6889283.

It is a cyclic number.

It is not a de Polignac number, because 51464443 - 2¹⁷ = 51333371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51464453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163743 + ... + 164056.

It is an arithmetic number, because the mean of its divisors is an integer number (12948100).

Almost surely, 2^51464443 is an apocalyptic number.

51464443 is a deficient number, since it is larger than the sum of its proper divisors (327957).

51464443 is a wasteful number, since it uses less digits than its factorization.

51464443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327956.

The product of its digits is 23040, while the sum is 31.

The square root of 51464443 is about 7173.8722458655. The cubic root of 51464443 is about 371.9652986284.

The spelling of 51464443 in words is "fifty-one million, four hundred sixty-four thousand, four hundred forty-three".