55587658 has 24 divisors (see below), whose sum is σ = 97954272. Its totient is φ = 23587704.

The previous prime is 55587647. The next prime is 55587659. The reversal of 55587658 is 85678555.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (55587659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7341 + ... + 12847.

It is an arithmetic number, because the mean of its divisors is an integer number (4081428).

Almost surely, 2^55587658 is an apocalyptic number.

55587658 is a deficient number, since it is larger than the sum of its proper divisors (42366614).

55587658 is a wasteful number, since it uses less digits than its factorization.

55587658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5626 (or 5619 counting only the distinct ones).

The product of its digits is 1680000, while the sum is 49.

The square root of 55587658 is about 7455.7131114334. The cubic root of 55587658 is about 381.6448962833.

The spelling of 55587658 in words is "fifty-five million, five hundred eighty-seven thousand, six hundred fifty-eight".