655108553 has 4 divisors (see below), whose sum is σ = 714663888. Its totient is φ = 595553220.

The previous prime is 655108547. The next prime is 655108561. The reversal of 655108553 is 355801556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655108553 - 2⁸ = 655108297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655108253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29777651 + ... + 29777672.

It is an arithmetic number, because the mean of its divisors is an integer number (178665972).

Almost surely, 2^655108553 is an apocalyptic number.

It is an amenable number.

655108553 is a deficient number, since it is larger than the sum of its proper divisors (59555335).

655108553 is a wasteful number, since it uses less digits than its factorization.

655108553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59555334.

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 655108553 is about 25595.0884546235. The cubic root of 655108553 is about 868.5025338801.

The spelling of 655108553 in words is "six hundred fifty-five million, one hundred eight thousand, five hundred fifty-three".