55416589 has 4 divisors (see below), whose sum is σ = 55722940. Its totient is φ = 55110240.

The previous prime is 55416553. The next prime is 55416601. The reversal of 55416589 is 98561455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8219689 + 47196900 = 2867^2 + 6870^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55416589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55416509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152904 + ... + 153265.

It is an arithmetic number, because the mean of its divisors is an integer number (13930735).

Almost surely, 2^55416589 is an apocalyptic number.

It is an amenable number.

55416589 is a deficient number, since it is larger than the sum of its proper divisors (306351).

55416589 is a wasteful number, since it uses less digits than its factorization.

55416589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306350.

The product of its digits is 216000, while the sum is 43.

The square root of 55416589 is about 7444.2319281441. The cubic root of 55416589 is about 381.2529945478.

The spelling of 55416589 in words is "fifty-five million, four hundred sixteen thousand, five hundred eighty-nine".