654529 has 2 divisors, whose sum is σ = 654530. Its totient is φ = 654528.

The previous prime is 654527. The next prime is 654539. The reversal of 654529 is 925456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 547600 + 106929 = 740^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 654529 - 2¹ = 654527 is a prime.

Together with 654527, it forms a pair of twin primes.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 654529.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654529.

It is not a weakly prime, because it can be changed into another prime (654527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327264 + 327265.

It is an arithmetic number, because the mean of its divisors is an integer number (327265).

2⁶⁵⁴⁵²⁹ is an apocalyptic number.

It is an amenable number.

654529 is a deficient number, since it is larger than the sum of its proper divisors (1).

654529 is an equidigital number, since it uses as much as digits as its factorization.

654529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 31.

The square root of 654529 is about 809.0296657107. The cubic root of 654529 is about 86.8246346438.

The spelling of 654529 in words is "six hundred fifty-four thousand, five hundred twenty-nine".