5561356420 has 12 divisors (see below), whose sum is σ = 11678848524. Its totient is φ = 2224542560.

The previous prime is 5561356403. The next prime is 5561356483. The reversal of 5561356420 is 246531655.

It can be written as a sum of positive squares in 2 ways, for example, as 1537737796 + 4023618624 = 39214^2 + 63432^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5561356420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139033891 + ... + 139033930.

It is an arithmetic number, because the mean of its divisors is an integer number (973237377).

Almost surely, 2^5561356420 is an apocalyptic number.

It is an amenable number.

5561356420 is an abundant number, since it is smaller than the sum of its proper divisors (6117492104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561356420 is a wasteful number, since it uses less digits than its factorization.

5561356420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278067830 (or 278067828 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The square root of 5561356420 is about 74574.5024790645. The cubic root of 5561356420 is about 1771.7138347088.

The spelling of 5561356420 in words is "five billion, five hundred sixty-one million, three hundred fifty-six thousand, four hundred twenty".