55577616 has 40 divisors (see below), whose sum is σ = 143889600. Its totient is φ = 18485376.

The previous prime is 55577579. The next prime is 55577617. The reversal of 55577616 is 61677555.

It is not an unprimeable number, because it can be changed into a prime (55577617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27786 + ... + 29718.

It is an arithmetic number, because the mean of its divisors is an integer number (3597240).

Almost surely, 2^55577616 is an apocalyptic number.

It is an amenable number.

55577616 is an abundant number, since it is smaller than the sum of its proper divisors (88311984).

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

55577616 is a wasteful number, since it uses less digits than its factorization.

55577616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543 (or 2537 counting only the distinct ones).

The product of its digits is 220500, while the sum is 42.

The square root of 55577616 is about 7455.0396377216. The cubic root of 55577616 is about 381.6219133107.

The spelling of 55577616 in words is "fifty-five million, five hundred seventy-seven thousand, six hundred sixteen".