55418587 has 8 divisors (see below), whose sum is σ = 63392000. Its totient is φ = 47459304.

The previous prime is 55418537. The next prime is 55418651. The reversal of 55418587 is 78581455.

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 55418587 - 2¹¹ = 55416539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55418527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6964 + ... + 12622.

It is an arithmetic number, because the mean of its divisors is an integer number (7924000).

Almost surely, 2^55418587 is an apocalyptic number.

55418587 is a deficient number, since it is larger than the sum of its proper divisors (7973413).

55418587 is a wasteful number, since it uses less digits than its factorization.

55418587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065.

The product of its digits is 224000, while the sum is 43.

The square root of 55418587 is about 7444.3661247953. The cubic root of 55418587 is about 381.2575764149.

The spelling of 55418587 in words is "fifty-five million, four hundred eighteen thousand, five hundred eighty-seven".