1055685899 has 2 divisors, whose sum is σ = 1055685900. Its totient is φ = 1055685898.

The previous prime is 1055685877. The next prime is 1055685913. The reversal of 1055685899 is 9985865501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1055685899 - 2²⁰ = 1054637323 is a prime.

It is a super-2 number, since 2×1055685899² = 2228945434694876402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055685859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527842949 + 527842950.

It is an arithmetic number, because the mean of its divisors is an integer number (527842950).

Almost surely, 2^1055685899 is an apocalyptic number.

1055685899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055685899 is an equidigital number, since it uses as much as digits as its factorization.

1055685899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888000, while the sum is 56.

The square root of 1055685899 is about 32491.3203640603. The cubic root of 1055685899 is about 1018.2276986247.

The spelling of 1055685899 in words is "one billion, fifty-five million, six hundred eighty-five thousand, eight hundred ninety-nine".