5245578520 has 256 divisors, whose sum is σ = 15515136000. Its totient is φ = 1549725696.

The previous prime is 5245578517. The next prime is 5245578529. The reversal of 5245578520 is 258755425.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5245578529) 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, 5048161 + ... + 5049199.

It is an arithmetic number, because the mean of its divisors is an integer number (60606000).

Almost surely, 2^5245578520 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 5245578520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7757568000).

5245578520 is an abundant number, since it is smaller than the sum of its proper divisors (10269557480).

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

5245578520 is a wasteful number, since it uses less digits than its factorization.

5245578520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 43.

The square root of 5245578520 is about 72426.3661935348. The cubic root of 5245578520 is about 1737.5252748596.

It can be divided in two parts, 524 and 5578520, that added together give a square (5579044 = 2362²).

The spelling of 5245578520 in words is "five billion, two hundred forty-five million, five hundred seventy-eight thousand, five hundred twenty".