55563205 has 4 divisors (see below), whose sum is σ = 66675852. Its totient is φ = 44450560.

The previous prime is 55563203. The next prime is 55563223. The reversal of 55563205 is 50236555.

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 19766916 + 35796289 = 4446^2 + 5983^2 .

It is not a de Polignac number, because 55563205 - 2¹ = 55563203 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 (55563203) 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, 5556316 + ... + 5556325.

It is an arithmetic number, because the mean of its divisors is an integer number (16668963).

Almost surely, 2^55563205 is an apocalyptic number.

It is an amenable number.

55563205 is a deficient number, since it is larger than the sum of its proper divisors (11112647).

55563205 is a wasteful number, since it uses less digits than its factorization.

55563205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112646.

The product of its (nonzero) digits is 22500, while the sum is 31.

The square root of 55563205 is about 7454.0730476700. The cubic root of 55563205 is about 381.5889262367.

The spelling of 55563205 in words is "fifty-five million, five hundred sixty-three thousand, two hundred five".