1522985 has 4 divisors (see below), whose sum is σ = 1827588. Its totient is φ = 1218384.

The previous prime is 1522981. The next prime is 1523003. The reversal of 1522985 is 5892251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 683929 + 839056 = 827^2 + 916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1522985 - 2² = 1522981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1522981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152294 + ... + 152303.

It is an arithmetic number, because the mean of its divisors is an integer number (456897).

2^1522985 is an apocalyptic number.

It is an amenable number.

1522985 is a deficient number, since it is larger than the sum of its proper divisors (304603).

1522985 is an equidigital number, since it uses as much as digits as its factorization.

1522985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304602.

The product of its digits is 7200, while the sum is 32.

The square root of 1522985 is about 1234.0927841941. The cubic root of 1522985 is about 115.0531575293.

The spelling of 1522985 in words is "one million, five hundred twenty-two thousand, nine hundred eighty-five".