654553 has 2 divisors, whose sum is σ = 654554. Its totient is φ = 654552.

The previous prime is 654541. The next prime is 654571. The reversal of 654553 is 355456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 278784 = 613^2 + 528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654553 is a prime.

It is not a weakly prime, because it can be changed into another prime (654593) 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 as a sum of consecutive naturals, namely, 327276 + 327277.

It is an arithmetic number, because the mean of its divisors is an integer number (327277).

2⁶⁵⁴⁵⁵³ is an apocalyptic number.

It is an amenable number.

654553 is a deficient number, since it is larger than the sum of its proper divisors (1).

654553 is an equidigital number, since it uses as much as digits as its factorization.

654553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 28.

The square root of 654553 is about 809.0444981582. The cubic root of 654553 is about 86.8256958475.

The spelling of 654553 in words is "six hundred fifty-four thousand, five hundred fifty-three".