55577587 has 8 divisors (see below), whose sum is σ = 60868080. Its totient is φ = 50432160.

The previous prime is 55577579. The next prime is 55577617. The reversal of 55577587 is 78577555.

55577587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55577587 - 2³ = 55577579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55577587.

It is not an unprimeable number, because it can be changed into a prime (55577507) 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 7 ways as a sum of consecutive naturals, for example, 35464 + ... + 36997.

It is an arithmetic number, because the mean of its divisors is an integer number (7608510).

Almost surely, 2^55577587 is an apocalyptic number.

55577587 is a deficient number, since it is larger than the sum of its proper divisors (5290493).

55577587 is a wasteful number, since it uses less digits than its factorization.

55577587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72533.

The product of its digits is 1715000, while the sum is 49.

The square root of 55577587 is about 7455.0376927283. The cubic root of 55577587 is about 381.6218469349.

The spelling of 55577587 in words is "fifty-five million, five hundred seventy-seven thousand, five hundred eighty-seven".