5561121052 has 12 divisors (see below), whose sum is σ = 9759533616. Its totient is φ = 2772682880.

The previous prime is 5561121037. The next prime is 5561121103. The reversal of 5561121052 is 2501211655.

It is a self number, because there is not a number n which added to its sum of digits gives 5561121052.

It is a congruent number.

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, 1967824 + ... + 1970647.

It is an arithmetic number, because the mean of its divisors is an integer number (813294468).

Almost surely, 2^5561121052 is an apocalyptic number.

It is an amenable number.

5561121052 is a deficient number, since it is larger than the sum of its proper divisors (4198412564).

5561121052 is a wasteful number, since it uses less digits than its factorization.

5561121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3938828 (or 3938826 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 5561121052 is about 74572.9243894860. The cubic root of 5561121052 is about 1771.6888401695.

The spelling of 5561121052 in words is "five billion, five hundred sixty-one million, one hundred twenty-one thousand, fifty-two".