7557007538 has 8 divisors (see below), whose sum is σ = 11338116588. Its totient is φ = 3777635344.

The previous prime is 7557007531. The next prime is 7557007553. The reversal of 7557007538 is 8357007557.

7557007538 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7436820169 + 120187369 = 86237^2 + 10963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 7557007492 and 7557007501.

It is not an unprimeable number, because it can be changed into a prime (7557007531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423281 + ... + 440772.

Almost surely, 2^7557007538 is an apocalyptic number.

7557007538 is a deficient number, since it is larger than the sum of its proper divisors (3781109050).

7557007538 is a wasteful number, since it uses less digits than its factorization.

7557007538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868428.

The product of its (nonzero) digits is 1029000, while the sum is 47.

The square root of 7557007538 is about 86931.0504825520. The cubic root of 7557007538 is about 1962.3807958104.

The spelling of 7557007538 in words is "seven billion, five hundred fifty-seven million, seven thousand, five hundred thirty-eight".