1055715581 has 2 divisors, whose sum is σ = 1055715582. Its totient is φ = 1055715580.

The previous prime is 1055715569. The next prime is 1055715587. The reversal of 1055715581 is 1855175501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1033944025 + 21771556 = 32155^2 + 4666^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055715581 - 2¹⁰ = 1055714557 is a prime.

It is a super-2 number, since 2×1055715581² = 2229070775932335122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055715587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527857790 + 527857791.

It is an arithmetic number, because the mean of its divisors is an integer number (527857791).

Almost surely, 2^1055715581 is an apocalyptic number.

It is an amenable number.

1055715581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055715581 is an equidigital number, since it uses as much as digits as its factorization.

1055715581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35000, while the sum is 38.

The square root of 1055715581 is about 32491.7771289907. Note that the first 3 decimals coincide. The cubic root of 1055715581 is about 1018.2372414730.

The spelling of 1055715581 in words is "one billion, fifty-five million, seven hundred fifteen thousand, five hundred eighty-one".