1522281 has 8 divisors (see below), whose sum is σ = 2035584. Its totient is φ = 1011920.

The previous prime is 1522253. The next prime is 1522321. The reversal of 1522281 is 1822251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1522281 - 2⁵ = 1522249 is a prime.

It is a super-2 number, since 2×1522281² = 4634678885922, which contains 22 as substring.

1522281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1522201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

2^1522281 is an apocalyptic number.

It is an amenable number.

1522281 is a deficient number, since it is larger than the sum of its proper divisors (513303).

1522281 is an equidigital number, since it uses as much as digits as its factorization.

1522281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its digits is 320, while the sum is 21.

The square root of 1522281 is about 1233.8075214554. The cubic root of 1522281 is about 115.0354270184.

The spelling of 1522281 in words is "one million, five hundred twenty-two thousand, two hundred eighty-one".