249522 has 32 divisors (see below), whose sum is σ = 615552. Its totient is φ = 65664.

The previous prime is 249521. The next prime is 249533. The reversal of 249522 is 225942.

It is a super-2 number, since 2×249522² = 124522456968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 249492 and 249501.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 249522.

It is not an unprimeable number, because it can be changed into a prime (249521) 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 in 15 ways as a sum of consecutive naturals, for example, 318 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (19236).

2²⁴⁹⁵²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307776).

249522 is an abundant number, since it is smaller than the sum of its proper divisors (366030).

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

249522 is a wasteful number, since it uses less digits than its factorization.

249522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482.

The product of its digits is 1440, while the sum is 24.

The square root of 249522 is about 499.5217712973. The cubic root of 249522 is about 62.9558773948.

The spelling of 249522 in words is "two hundred forty-nine thousand, five hundred twenty-two".