5456640552 has 256 divisors, whose sum is σ = 16796160000. Its totient is φ = 1455759360.

The previous prime is 5456640529. The next prime is 5456640559. The reversal of 5456640552 is 2550466545.

It is a happy number.

It is a super-2 number, since 2×5456640552² = 59549852227461729408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5456640559) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7588849 + ... + 7589567.

It is an arithmetic number, because the mean of its divisors is an integer number (65610000).

Almost surely, 2^5456640552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5456640552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8398080000).

5456640552 is an abundant number, since it is smaller than the sum of its proper divisors (11339519448).

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

5456640552 is a wasteful number, since it uses less digits than its factorization.

5456640552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The square root of 5456640552 is about 73869.0771026686. The cubic root of 5456640552 is about 1760.5233197591.

The spelling of 5456640552 in words is "five billion, four hundred fifty-six million, six hundred forty thousand, five hundred fifty-two".