55021726 has 4 divisors (see below), whose sum is σ = 82532592. Its totient is φ = 27510862.

The previous prime is 55021723. The next prime is 55021751. The reversal of 55021726 is 62712055.

55021726 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.

It is a junction number, because it is equal to n+sod(n) for n = 55021694 and 55021703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55021721) 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, 13755430 + ... + 13755433.

It is an arithmetic number, because the mean of its divisors is an integer number (20633148).

Almost surely, 2^55021726 is an apocalyptic number.

55021726 is a deficient number, since it is larger than the sum of its proper divisors (27510866).

55021726 is a wasteful number, since it uses less digits than its factorization.

55021726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27510865.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 55021726 is about 7417.6631090931. The cubic root of 55021726 is about 380.3453139964.

The spelling of 55021726 in words is "fifty-five million, twenty-one thousand, seven hundred twenty-six".