654522 has 32 divisors (see below), whose sum is σ = 1465344. Its totient is φ = 193200.

The previous prime is 654509. The next prime is 654527. The reversal of 654522 is 225456.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 654492 and 654501.

It is not an unprimeable number, because it can be changed into a prime (654527) 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 in 15 ways as a sum of consecutive naturals, for example, 2997 + ... + 3207.

It is an arithmetic number, because the mean of its divisors is an integer number (45792).

2⁶⁵⁴⁵²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732672).

654522 is an abundant number, since it is smaller than the sum of its proper divisors (810822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654522 is a wasteful number, since it uses less digits than its factorization.

654522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274.

The product of its digits is 2400, while the sum is 24.

The square root of 654522 is about 809.0253395290. The cubic root of 654522 is about 86.8243251212.

Adding to 654522 its reverse (225456), we get a palindrome (879978).

It can be divided in two parts, 654 and 522, that added together give a triangular number (1176 = T₄₈).

The spelling of 654522 in words is "six hundred fifty-four thousand, five hundred twenty-two".