1057047681 has 8 divisors (see below), whose sum is σ = 1409636320. Its totient is φ = 704578752.

The previous prime is 1057047659. The next prime is 1057047689. The reversal of 1057047681 is 1867407501.

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

It is not a de Polignac number, because 1057047681 - 2⁷ = 1057047553 is a prime.

It is a super-2 number, since 2×1057047681² = 2234699599814955522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057047689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6760 + ... + 46473.

It is an arithmetic number, because the mean of its divisors is an integer number (176204540).

Almost surely, 2^1057047681 is an apocalyptic number.

It is an amenable number.

1057047681 is a deficient number, since it is larger than the sum of its proper divisors (352588639).

1057047681 is an equidigital number, since it uses as much as digits as its factorization.

1057047681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59855.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 1057047681 is about 32512.2696992997. The cubic root of 1057047681 is about 1018.6653314355.

The spelling of 1057047681 in words is "one billion, fifty-seven million, forty-seven thousand, six hundred eighty-one".