655515161 has 8 divisors (see below), whose sum is σ = 749422080. Its totient is φ = 561673728.

The previous prime is 655515137. The next prime is 655515163. The reversal of 655515161 is 161515556.

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

It is not a de Polignac number, because 655515161 - 2¹⁴ = 655498777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (655515163) 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, 7385 + ... + 36953.

It is an arithmetic number, because the mean of its divisors is an integer number (93677760).

Almost surely, 2^655515161 is an apocalyptic number.

It is an amenable number.

655515161 is a deficient number, since it is larger than the sum of its proper divisors (93906919).

655515161 is a wasteful number, since it uses less digits than its factorization.

655515161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32743.

The product of its digits is 22500, while the sum is 35.

The square root of 655515161 is about 25603.0303089302. The cubic root of 655515161 is about 868.6821819910.

The spelling of 655515161 in words is "six hundred fifty-five million, five hundred fifteen thousand, one hundred sixty-one".