55547605 has 4 divisors (see below), whose sum is σ = 66657132. Its totient is φ = 44438080.

The previous prime is 55547603. The next prime is 55547617. The reversal of 55547605 is 50674555.

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 16184529 + 39363076 = 4023^2 + 6274^2 .

It is not a de Polignac number, because 55547605 - 2¹ = 55547603 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 (55547603) 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, 5554756 + ... + 5554765.

It is an arithmetic number, because the mean of its divisors is an integer number (16664283).

Almost surely, 2^55547605 is an apocalyptic number.

It is an amenable number.

55547605 is a deficient number, since it is larger than the sum of its proper divisors (11109527).

55547605 is a wasteful number, since it uses less digits than its factorization.

55547605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11109526.

The product of its (nonzero) digits is 105000, while the sum is 37.

The square root of 55547605 is about 7453.0265664359. The cubic root of 55547605 is about 381.5532110877.

The spelling of 55547605 in words is "fifty-five million, five hundred forty-seven thousand, six hundred five".