655154081 has 2 divisors, whose sum is σ = 655154082. Its totient is φ = 655154080.

The previous prime is 655154053. The next prime is 655154083. The reversal of 655154081 is 180451556.

It is a happy number.

655154081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 412293025 + 242861056 = 20305^2 + 15584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655154081 is a prime.

It is a super-2 number, since 2×655154081² = 858453739701909122, which contains 22 as substring.

Together with 655154083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655154083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327577040 + 327577041.

It is an arithmetic number, because the mean of its divisors is an integer number (327577041).

Almost surely, 2^655154081 is an apocalyptic number.

It is an amenable number.

655154081 is a deficient number, since it is larger than the sum of its proper divisors (1).

655154081 is an equidigital number, since it uses as much as digits as its factorization.

655154081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 655154081 is about 25595.9778285574. The cubic root of 655154081 is about 868.5226528192.

It can be divided in two parts, 65515 and 4081, that added together give a palindrome (69596).

The spelling of 655154081 in words is "six hundred fifty-five million, one hundred fifty-four thousand, eighty-one".