55305545 has 8 divisors (see below), whose sum is σ = 66464520. Its totient is φ = 44179200.

The previous prime is 55305533. The next prime is 55305559. The reversal of 55305545 is 54550355.

It can be written as a sum of positive squares in 4 ways, for example, as 7929856 + 47375689 = 2816^2 + 6883^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55305545 - 2¹⁰ = 55304521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4256 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (8308065).

Almost surely, 2^55305545 is an apocalyptic number.

It is an amenable number.

55305545 is a deficient number, since it is larger than the sum of its proper divisors (11158975).

55305545 is a wasteful number, since it uses less digits than its factorization.

55305545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315.

The product of its (nonzero) digits is 37500, while the sum is 32.

The square root of 55305545 is about 7436.7697960875. The cubic root of 55305545 is about 380.9981721357.

The spelling of 55305545 in words is "fifty-five million, three hundred five thousand, five hundred forty-five".