5561381828 has 6 divisors (see below), whose sum is σ = 9732418206. Its totient is φ = 2780690912.

The previous prime is 5561381827. The next prime is 5561381851. The reversal of 5561381828 is 8281831655.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5554422784 + 6959044 = 74528^2 + 2638^2 .

It is not an unprimeable number, because it can be changed into a prime (5561381827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695172725 + ... + 695172732.

It is an arithmetic number, because the mean of its divisors is an integer number (1622069701).

Almost surely, 2^5561381828 is an apocalyptic number.

It is an amenable number.

5561381828 is a deficient number, since it is larger than the sum of its proper divisors (4171036378).

5561381828 is a wasteful number, since it uses less digits than its factorization.

5561381828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390345461 (or 1390345459 counting only the distinct ones).

The product of its digits is 460800, while the sum is 47.

The square root of 5561381828 is about 74574.6728320011. The cubic root of 5561381828 is about 1771.7165328298.

The spelling of 5561381828 in words is "five billion, five hundred sixty-one million, three hundred eighty-one thousand, eight hundred twenty-eight".