7521521152 has 80 divisors (see below), whose sum is σ = 15279593472. Its totient is φ = 3698472960.

The previous prime is 7521521149. The next prime is 7521521159. The reversal of 7521521152 is 2511251257.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7521521159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8517703 + ... + 8518585.

Almost surely, 2^7521521152 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 7521521152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7639796736).

7521521152 is an abundant number, since it is smaller than the sum of its proper divisors (7758072320).

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

7521521152 is a wasteful number, since it uses less digits than its factorization.

7521521152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1143 counting only the distinct ones).

The product of its digits is 7000, while the sum is 31.

The square root of 7521521152 is about 86726.7037999254. The cubic root of 7521521152 is about 1959.3043095328.

The spelling of 7521521152 in words is "seven billion, five hundred twenty-one million, five hundred twenty-one thousand, one hundred fifty-two".