55020772 has 24 divisors (see below), whose sum is σ = 105469560. Its totient is φ = 24998400.

The previous prime is 55020769. The next prime is 55020793. The reversal of 55020772 is 27702055.

55020772 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 4 ways, for example, as 27709696 + 27311076 = 5264^2 + 5226^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55020772.

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 in 7 ways as a sum of consecutive naturals, for example, 11979 + ... + 15922.

It is an arithmetic number, because the mean of its divisors is an integer number (4394565).

Almost surely, 2^55020772 is an apocalyptic number.

It is an amenable number.

55020772 is a deficient number, since it is larger than the sum of its proper divisors (50448788).

55020772 is a wasteful number, since it uses less digits than its factorization.

55020772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27951 (or 27949 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 55020772 is about 7417.5988028472. The cubic root of 55020772 is about 380.3431157645.

The spelling of 55020772 in words is "fifty-five million, twenty thousand, seven hundred seventy-two".