1563441 has 24 divisors (see below), whose sum is σ = 2362080. Its totient is φ = 918720.

The previous prime is 1563433. The next prime is 1563449. The reversal of 1563441 is 1443651.

It is an interprime number because it is at equal distance from previous prime (1563433) and next prime (1563449).

It is not a de Polignac number, because 1563441 - 2³ = 1563433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1563449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21381 + ... + 21453.

It is an arithmetic number, because the mean of its divisors is an integer number (98420).

2^1563441 is an apocalyptic number.

1563441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1563441 is a deficient number, since it is larger than the sum of its proper divisors (798639).

1563441 is a wasteful number, since it uses less digits than its factorization.

1563441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 146 counting only the distinct ones).

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

The square root of 1563441 is about 1250.3763433463. The cubic root of 1563441 is about 116.0630107527.

The spelling of 1563441 in words is "one million, five hundred sixty-three thousand, four hundred forty-one".