1055867817 has 8 divisors (see below), whose sum is σ = 1424785824. Its totient is φ = 695430848.

The previous prime is 1055867809. The next prime is 1055867893. The reversal of 1055867817 is 7187685501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1055867817 - 2³ = 1055867809 is a prime.

It is a super-2 number, since 2×1055867817² = 2229713693952690978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1055863817) 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 in 7 ways as a sum of consecutive naturals, for example, 2119968 + ... + 2120465.

It is an arithmetic number, because the mean of its divisors is an integer number (178098228).

Almost surely, 2^1055867817 is an apocalyptic number.

It is an amenable number.

1055867817 is a deficient number, since it is larger than the sum of its proper divisors (368918007).

1055867817 is an equidigital number, since it uses as much as digits as its factorization.

1055867817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4240519.

The product of its (nonzero) digits is 470400, while the sum is 48.

The square root of 1055867817 is about 32494.1197295757. The cubic root of 1055867817 is about 1018.2861829736.

The spelling of 1055867817 in words is "one billion, fifty-five million, eight hundred sixty-seven thousand, eight hundred seventeen".