5561356057 has 4 divisors (see below), whose sum is σ = 5567698276. Its totient is φ = 5555013840.

The previous prime is 5561356049. The next prime is 5561356061. The reversal of 5561356057 is 7506531655.

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 4593586176 + 967769881 = 67776^2 + 31109^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561356057 - 2³ = 5561356049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561356037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3169794 + ... + 3171547.

It is an arithmetic number, because the mean of its divisors is an integer number (1391924569).

Almost surely, 2^5561356057 is an apocalyptic number.

It is an amenable number.

5561356057 is a deficient number, since it is larger than the sum of its proper divisors (6342219).

5561356057 is an equidigital number, since it uses as much as digits as its factorization.

5561356057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342218.

The product of its (nonzero) digits is 472500, while the sum is 43.

The square root of 5561356057 is about 74574.5000452568. The cubic root of 5561356057 is about 1771.7137961612.

The spelling of 5561356057 in words is "five billion, five hundred sixty-one million, three hundred fifty-six thousand, fifty-seven".