51443086 has 4 divisors (see below), whose sum is σ = 77164632. Its totient is φ = 25721542.

The previous prime is 51443083. The next prime is 51443101. The reversal of 51443086 is 68034415.

It is a happy number.

51443086 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: 68034415 = 5 ⋅13606883.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51443083) 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 as a sum of consecutive naturals, namely, 12860770 + ... + 12860773.

It is an arithmetic number, because the mean of its divisors is an integer number (19291158).

Almost surely, 2^51443086 is an apocalyptic number.

51443086 is a deficient number, since it is larger than the sum of its proper divisors (25721546).

51443086 is a wasteful number, since it uses less digits than its factorization.

51443086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25721545.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 51443086 is about 7172.3835647573. The cubic root of 51443086 is about 371.9138381017.

The spelling of 51443086 in words is "fifty-one million, four hundred forty-three thousand, eighty-six".