1536481 has 4 divisors (see below), whose sum is σ = 1538964. Its totient is φ = 1534000.

The previous prime is 1536467. The next prime is 1536487. The reversal of 1536481 is 1846351.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 576081 + 960400 = 759^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1536481 - 2⁹ = 1535969 is a prime.

It is a super-2 number, since 2×1536481² = 4721547726722, which contains 22 as substring.

It is a Duffinian number.

1536481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1536487) 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, 531 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (384741).

2^1536481 is an apocalyptic number.

It is an amenable number.

1536481 is a deficient number, since it is larger than the sum of its proper divisors (2483).

1536481 is a wasteful number, since it uses less digits than its factorization.

1536481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482.

The product of its digits is 2880, while the sum is 28.

The square root of 1536481 is about 1239.5487081999. The cubic root of 1536481 is about 115.3920081531.

The spelling of 1536481 in words is "one million, five hundred thirty-six thousand, four hundred eighty-one".