7522320520 has 128 divisors (see below), whose sum is σ = 20422160640. Its totient is φ = 2456663040.

The previous prime is 7522320511. The next prime is 7522320529. The reversal of 7522320520 is 250232257.

It is an interprime number because it is at equal distance from previous prime (7522320511) and next prime (7522320529).

It is a super-2 number, since 2×7522320520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7522320529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193869 + ... + 229411.

It is an arithmetic number, because the mean of its divisors is an integer number (159548130).

Almost surely, 2^7522320520 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 7522320520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10211080320).

7522320520 is an abundant number, since it is smaller than the sum of its proper divisors (12899840120).

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

7522320520 is a wasteful number, since it uses less digits than its factorization.

7522320520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35615 (or 35611 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 7522320520 is about 86731.3122234410. The cubic root of 7522320520 is about 1959.3737170216.

Adding to 7522320520 its reverse (250232257), we get a palindrome (7772552777).

The spelling of 7522320520 in words is "seven billion, five hundred twenty-two million, three hundred twenty thousand, five hundred twenty".