5561011057 has 4 divisors (see below), whose sum is σ = 6355441216. Its totient is φ = 4766580900.

The previous prime is 5561011037. The next prime is 5561011063. The reversal of 5561011057 is 7501101655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561011057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561011007) 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, 397215069 + ... + 397215082.

It is an arithmetic number, because the mean of its divisors is an integer number (1588860304).

Almost surely, 2^5561011057 is an apocalyptic number.

It is an amenable number.

5561011057 is a deficient number, since it is larger than the sum of its proper divisors (794430159).

5561011057 is an equidigital number, since it uses as much as digits as its factorization.

5561011057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794430158.

The product of its (nonzero) digits is 5250, while the sum is 31.

The square root of 5561011057 is about 74572.1868862648. The cubic root of 5561011057 is about 1771.6771591795.

The spelling of 5561011057 in words is "five billion, five hundred sixty-one million, eleven thousand, fifty-seven".