55250772 has 24 divisors (see below), whose sum is σ = 129535392. Its totient is φ = 18328800.

The previous prime is 55250759. The next prime is 55250779. The reversal of 55250772 is 27705255.

55250772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55250779) 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 7 ways as a sum of consecutive naturals, for example, 8379 + ... + 13442.

It is an arithmetic number, because the mean of its divisors is an integer number (5397308).

Almost surely, 2^55250772 is an apocalyptic number.

It is an amenable number.

55250772 is an abundant number, since it is smaller than the sum of its proper divisors (74284620).

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

55250772 is a wasteful number, since it uses less digits than its factorization.

55250772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22039 (or 22037 counting only the distinct ones).

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 55250772 is about 7433.0863038175. The cubic root of 55250772 is about 380.8723540956.

The spelling of 55250772 in words is "fifty-five million, two hundred fifty thousand, seven hundred seventy-two".