1262581 has 2 divisors, whose sum is σ = 1262582. Its totient is φ = 1262580.

The previous prime is 1262563. The next prime is 1262587. The reversal of 1262581 is 1852621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 443556 = 905^2 + 666^2 .

It is an emirp because it is prime and its reverse (1852621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1262581 - 2⁷ = 1262453 is a prime.

It is a super-2 number, since 2×1262581² = 3188221563122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1262587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631290 + 631291.

It is an arithmetic number, because the mean of its divisors is an integer number (631291).

2^1262581 is an apocalyptic number.

It is an amenable number.

1262581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1262581 is an equidigital number, since it uses as much as digits as its factorization.

1262581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 960, while the sum is 25.

The square root of 1262581 is about 1123.6462966610. The cubic root of 1262581 is about 108.0819280035.

Subtracting from 1262581 its product of digits (960), we obtain a palindrome (1261621).

The spelling of 1262581 in words is "one million, two hundred sixty-two thousand, five hundred eighty-one".