5561430555 has 32 divisors (see below), whose sum is σ = 8945641728. Its totient is φ = 2950358400.

The previous prime is 5561430533. The next prime is 5561430557. The reversal of 5561430555 is 5550341655.

It is not a de Polignac number, because 5561430555 - 2¹⁷ = 5561299483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5561430557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2764500 + ... + 2766510.

It is an arithmetic number, because the mean of its divisors is an integer number (279551304).

Almost surely, 2^5561430555 is an apocalyptic number.

5561430555 is a deficient number, since it is larger than the sum of its proper divisors (3384211173).

5561430555 is a wasteful number, since it uses less digits than its factorization.

5561430555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907.

The product of its (nonzero) digits is 225000, while the sum is 39.

The square root of 5561430555 is about 74574.9995306738. Note that the first 3 decimals coincide. The cubic root of 5561430555 is about 1771.7217072140.

Subtracting from 5561430555 its reverse (5550341655), we obtain a square (11088900 = 3330²).

The spelling of 5561430555 in words is "five billion, five hundred sixty-one million, four hundred thirty thousand, five hundred fifty-five".