5561434451 has 4 divisors (see below), whose sum is σ = 5888577672. Its totient is φ = 5234291232.

The previous prime is 5561434433. The next prime is 5561434453. The reversal of 5561434451 is 1544341655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1544341655 = 5 ⋅308868331.

It is a cyclic number.

It is not a de Polignac number, because 5561434451 - 2²² = 5557240147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5561434453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163571585 + ... + 163571618.

It is an arithmetic number, because the mean of its divisors is an integer number (1472144418).

Almost surely, 2^5561434451 is an apocalyptic number.

5561434451 is a deficient number, since it is larger than the sum of its proper divisors (327143221).

5561434451 is a wasteful number, since it uses less digits than its factorization.

5561434451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327143220.

The product of its digits is 144000, while the sum is 38.

The square root of 5561434451 is about 74575.0256520237. The cubic root of 5561434451 is about 1771.7221209341.

The spelling of 5561434451 in words is "five billion, five hundred sixty-one million, four hundred thirty-four thousand, four hundred fifty-one".