1563131 has 2 divisors, whose sum is σ = 1563132. Its totient is φ = 1563130.

The previous prime is 1563119. The next prime is 1563137. The reversal of 1563131 is 1313651.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1313651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1563131 - 2¹⁰ = 1562107 is a prime.

It is a super-2 number, since 2×1563131² = 4886757046322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1563137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781565 + 781566.

It is an arithmetic number, because the mean of its divisors is an integer number (781566).

2^1563131 is an apocalyptic number.

1563131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1563131 is an equidigital number, since it uses as much as digits as its factorization.

1563131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 20.

The square root of 1563131 is about 1250.2523745228. The cubic root of 1563131 is about 116.0553392317.

Adding to 1563131 its reverse (1313651), we get a palindrome (2876782).

The spelling of 1563131 in words is "one million, five hundred sixty-three thousand, one hundred thirty-one".