8542987553 has 8 divisors (see below), whose sum is σ = 8561475360. Its totient is φ = 8524516000.

The previous prime is 8542987529. The next prime is 8542987561. The reversal of 8542987553 is 3557892458.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8542987553 - 2¹² = 8542983457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8542987153) 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, 2003738 + ... + 2007996.

It is an arithmetic number, because the mean of its divisors is an integer number (1070184420).

Almost surely, 2^8542987553 is an apocalyptic number.

It is an amenable number.

8542987553 is a deficient number, since it is larger than the sum of its proper divisors (18487807).

8542987553 is a wasteful number, since it uses less digits than its factorization.

8542987553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127.

The product of its digits is 12096000, while the sum is 56.

The square root of 8542987553 is about 92428.2832957531. The cubic root of 8542987553 is about 2044.2621667350.

The spelling of 8542987553 in words is "eight billion, five hundred forty-two million, nine hundred eighty-seven thousand, five hundred fifty-three".