55617543 has 16 divisors (see below), whose sum is σ = 83749600. Its totient is φ = 36469440.

The previous prime is 55617493. The next prime is 55617559. The reversal of 55617543 is 34571655.

55617543 is a `hidden beast` number, since 55 + 61 + 7 + 543 = 666.

It is not a de Polignac number, because 55617543 - 2¹² = 55613447 is a prime.

It is a super-2 number, since 2×55617543² = 6186622178713698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55617498 and 55617507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55617593) 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, 15238 + ... + 18531.

It is an arithmetic number, because the mean of its divisors is an integer number (5234350).

Almost surely, 2^55617543 is an apocalyptic number.

55617543 is a deficient number, since it is larger than the sum of its proper divisors (28132057).

55617543 is a wasteful number, since it uses less digits than its factorization.

55617543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33839 (or 33833 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 55617543 is about 7457.7170099166. The cubic root of 55617543 is about 381.7132772562.

The spelling of 55617543 in words is "fifty-five million, six hundred seventeen thousand, five hundred forty-three".