55986593 has 16 divisors (see below), whose sum is σ = 64902096. Its totient is φ = 47831040.

The previous prime is 55986569. The next prime is 55986611. The reversal of 55986593 is 39568955.

It can be written as a sum of positive squares in 8 ways, for example, as 22543504 + 33443089 = 4748^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 55986593 - 2¹⁰ = 55985569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55986523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11405 + ... + 15557.

It is an arithmetic number, because the mean of its divisors is an integer number (4056381).

Almost surely, 2^55986593 is an apocalyptic number.

It is an amenable number.

55986593 is a deficient number, since it is larger than the sum of its proper divisors (8915503).

55986593 is a wasteful number, since it uses less digits than its factorization.

55986593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4244.

The product of its digits is 1458000, while the sum is 50.

The square root of 55986593 is about 7482.4189270583. The cubic root of 55986593 is about 382.5557023696. Note that the first 3 decimals are identical.

The spelling of 55986593 in words is "fifty-five million, nine hundred eighty-six thousand, five hundred ninety-three".