1522 has 4 divisors (see below), whose sum is σ = 2286. Its totient is φ = 760.
The previous prime is 1511. The next prime is 1523. The reversal of 1522 is 2251.
1522 is nontrivially palindromic in base 12.
It is a Cunningham number, because it is equal to 392+1.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 1521 + 1 = 39^2 + 1^2 .
1522 is an undulating number in base 12.
It is a plaindrome in base 14.
It is a junction number, because it is equal to n+sod(n) for n = 1499 and 1508.
It is not an unprimeable number, because it can be changed into a prime (1523) by changing a digit.
1522 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
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, 379 + ... + 382.
21522 is an apocalyptic number.
1522 is a deficient number, since it is larger than the sum of its proper divisors (764).
1522 is an equidigital number, since it uses as much as digits as its factorization.
1522 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 763.
The product of its digits is 20, while the sum is 10.
The square root of 1522 is about 39.0128184063. The cubic root of 1522 is about 11.5028348399.
Adding to 1522 its reverse (2251), we get a palindrome (3773).
Subtracting 1522 from its reverse (2251), we obtain a 6-th power (729 = 36).
The spelling of 1522 in words is "one thousand, five hundred twenty-two".
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