55726940 has 12 divisors (see below), whose sum is σ = 117026616. Its totient is φ = 22290768.

The previous prime is 55726919. The next prime is 55726949. The reversal of 55726940 is 4962755.

It is a happy number.

55726940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 55726894 and 55726903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55726949) 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 3 ways as a sum of consecutive naturals, for example, 1393154 + ... + 1393193.

It is an arithmetic number, because the mean of its divisors is an integer number (9752218).

Almost surely, 2^55726940 is an apocalyptic number.

It is an amenable number.

55726940 is an abundant number, since it is smaller than the sum of its proper divisors (61299676).

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

55726940 is a wasteful number, since it uses less digits than its factorization.

55726940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786356 (or 2786354 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 55726940 is about 7465.0478900004. The cubic root of 55726940 is about 381.9633838244.

The spelling of 55726940 in words is "fifty-five million, seven hundred twenty-six thousand, nine hundred forty".