55366644 has 24 divisors (see below), whose sum is σ = 130747680. Its totient is φ = 18232864.

The previous prime is 55366643. The next prime is 55366667. The reversal of 55366644 is 44666355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55366643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26799 + ... + 28790.

It is an arithmetic number, because the mean of its divisors is an integer number (5447820).

Almost surely, 2^55366644 is an apocalyptic number.

It is an amenable number.

55366644 is an abundant number, since it is smaller than the sum of its proper divisors (75381036).

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

55366644 is a wasteful number, since it uses less digits than its factorization.

55366644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55679 (or 55677 counting only the distinct ones).

The product of its digits is 259200, while the sum is 39.

The square root of 55366644 is about 7440.8765612662. The cubic root of 55366644 is about 381.1384235349.

The spelling of 55366644 in words is "fifty-five million, three hundred sixty-six thousand, six hundred forty-four".