5561155205 has 8 divisors (see below), whose sum is σ = 6675073272. Its totient is φ = 4447799488.

The previous prime is 5561155199. The next prime is 5561155207. The reversal of 5561155205 is 5025511655.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1194324481 + 4366830724 = 34559^2 + 66082^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5561155205 - 2¹⁸ = 5560893061 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 (5561155207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118514 + ... + 158643.

It is an arithmetic number, because the mean of its divisors is an integer number (834384159).

Almost surely, 2^5561155205 is an apocalyptic number.

It is an amenable number.

5561155205 is a deficient number, since it is larger than the sum of its proper divisors (1113918067).

5561155205 is a wasteful number, since it uses less digits than its factorization.

5561155205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281175.

The product of its (nonzero) digits is 37500, while the sum is 35.

The square root of 5561155205 is about 74573.1533797519. The cubic root of 5561155205 is about 1771.6924670381.

The spelling of 5561155205 in words is "five billion, five hundred sixty-one million, one hundred fifty-five thousand, two hundred five".