1097042581 has 2 divisors, whose sum is σ = 1097042582. Its totient is φ = 1097042580.

The previous prime is 1097042459. The next prime is 1097042593. The reversal of 1097042581 is 1852407901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608411556 + 488631025 = 24666^2 + 22105^2 .

It is an emirp because it is prime and its reverse (1852407901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1097042581 - 2⁹ = 1097042069 is a prime.

It is a super-2 number, since 2×1097042581² = 2407004849054283122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1097042581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097042281) 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 as a sum of consecutive naturals, namely, 548521290 + 548521291.

It is an arithmetic number, because the mean of its divisors is an integer number (548521291).

Almost surely, 2^1097042581 is an apocalyptic number.

It is an amenable number.

1097042581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097042581 is an equidigital number, since it uses as much as digits as its factorization.

1097042581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1097042581 is about 33121.6331270063. The cubic root of 1097042581 is about 1031.3541685236.

The spelling of 1097042581 in words is "one billion, ninety-seven million, forty-two thousand, five hundred eighty-one".