655541 has 2 divisors, whose sum is σ = 655542. Its totient is φ = 655540.

The previous prime is 655531. The next prime is 655547. The reversal of 655541 is 145556.

655541 is nontrivially palindromic in base 5.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568516 + 87025 = 754^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 655541 - 2¹⁴ = 639157 is a prime.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 655541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (655547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327770 + 327771.

It is an arithmetic number, because the mean of its divisors is an integer number (327771).

2⁶⁵⁵⁵⁴¹ is an apocalyptic number.

It is an amenable number.

655541 is a deficient number, since it is larger than the sum of its proper divisors (1).

655541 is an equidigital number, since it uses as much as digits as its factorization.

655541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 26.

The square root of 655541 is about 809.6548647418. The cubic root of 655541 is about 86.8693595703.

The spelling of 655541 in words is "six hundred fifty-five thousand, five hundred forty-one".