51445456 has 10 divisors (see below), whose sum is σ = 99675602. Its totient is φ = 25722720.

The previous prime is 51445439. The next prime is 51445477. The reversal of 51445456 is 65454415.

51445456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 10995856 = 6360^2 + 3316^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1607655 + ... + 1607686.

Almost surely, 2^51445456 is an apocalyptic number.

It is an amenable number.

51445456 is a deficient number, since it is larger than the sum of its proper divisors (48230146).

51445456 is a wasteful number, since it uses less digits than its factorization.

51445456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215349 (or 3215343 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 51445456 is about 7172.5487798969. The cubic root of 51445456 is about 371.9195494119.

The spelling of 51445456 in words is "fifty-one million, four hundred forty-five thousand, four hundred fifty-six".