51550444 has 12 divisors (see below), whose sum is σ = 98414568. Its totient is φ = 23432000.

The previous prime is 51550417. The next prime is 51550469. The reversal of 51550444 is 44405515.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585757 + ... + 585844.

It is an arithmetic number, because the mean of its divisors is an integer number (8201214).

Almost surely, 2^51550444 is an apocalyptic number.

It is an amenable number.

51550444 is a deficient number, since it is larger than the sum of its proper divisors (46864124).

51550444 is a wasteful number, since it uses less digits than its factorization.

51550444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171616 (or 1171614 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 51550444 is about 7179.8637870088. The cubic root of 51550444 is about 372.1723774282.

Adding to 51550444 its reverse (44405515), we get a palindrome (95955959).

Subtracting from 51550444 its reverse (44405515), we obtain a square (7144929 = 2673²).

The spelling of 51550444 in words is "fifty-one million, five hundred fifty thousand, four hundred forty-four".