7545815552 has 90 divisors (see below), whose sum is σ = 16619742909. Its totient is φ = 3420088320.

The previous prime is 7545815533. The next prime is 7545815567. The reversal of 7545815552 is 2555185457.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 7107164416 + 438651136 = 84304^2 + 20944^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=61424.

It is a junction number, because it is equal to n+sod(n) for n = 7545815497 and 7545815506.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21621074 + ... + 21621422.

Almost surely, 2^7545815552 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 7545815552

7545815552 is an abundant number, since it is smaller than the sum of its proper divisors (9073927357).

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

7545815552 is an frugal number, since it uses more digits than its factorization.

7545815552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 362 counting only the distinct ones).

The product of its digits is 1400000, while the sum is 47.

The square root of 7545815552 is about 86866.6538552050. The cubic root of 7545815552 is about 1961.4115501736.

The spelling of 7545815552 in words is "seven billion, five hundred forty-five million, eight hundred fifteen thousand, five hundred fifty-two".