5561137520 has 40 divisors (see below), whose sum is σ = 12934462320. Its totient is φ = 2223626240.

The previous prime is 5561137511. The next prime is 5561137537. The reversal of 5561137520 is 257311655.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231851 + ... + 254709.

It is an arithmetic number, because the mean of its divisors is an integer number (323361558).

Almost surely, 2^5561137520 is an apocalyptic number.

It is an amenable number.

5561137520 is an abundant number, since it is smaller than the sum of its proper divisors (7373324800).

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

5561137520 is a wasteful number, since it uses less digits than its factorization.

5561137520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25913 (or 25907 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 5561137520 is about 74573.0348048140. The cubic root of 5561137520 is about 1771.6905889862.

The spelling of 5561137520 in words is "five billion, five hundred sixty-one million, one hundred thirty-seven thousand, five hundred twenty".