56556205 has 4 divisors (see below), whose sum is σ = 67867452. Its totient is φ = 45244960.

The previous prime is 56556197. The next prime is 56556209. The reversal of 56556205 is 50265565.

It is a happy number.

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 29909961 + 26646244 = 5469^2 + 5162^2 .

It is not a de Polignac number, because 56556205 - 2³ = 56556197 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 (56556209) 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, 5655616 + ... + 5655625.

It is an arithmetic number, because the mean of its divisors is an integer number (16966863).

Almost surely, 2^56556205 is an apocalyptic number.

It is an amenable number.

56556205 is a deficient number, since it is larger than the sum of its proper divisors (11311247).

56556205 is a wasteful number, since it uses less digits than its factorization.

56556205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11311246.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 56556205 is about 7520.3859608400. The cubic root of 56556205 is about 383.8487111095.

The spelling of 56556205 in words is "fifty-six million, five hundred fifty-six thousand, two hundred five".