1057113281 has 8 divisors (see below), whose sum is σ = 1260657024. Its totient is φ = 866701440.

The previous prime is 1057113271. The next prime is 1057113287. The reversal of 1057113281 is 1823117501.

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 1057113281 - 2²⁶ = 990004417 is a prime.

It is a super-2 number, since 2×1057113281² = 2234976977733169922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057113287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3282800 + ... + 3283121.

It is an arithmetic number, because the mean of its divisors is an integer number (157582128).

Almost surely, 2^1057113281 is an apocalyptic number.

It is an amenable number.

1057113281 is a deficient number, since it is larger than the sum of its proper divisors (203543743).

1057113281 is an equidigital number, since it uses as much as digits as its factorization.

1057113281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6565951.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 1057113281 is about 32513.2785335469. The cubic root of 1057113281 is about 1018.6864036680.

The spelling of 1057113281 in words is "one billion, fifty-seven million, one hundred thirteen thousand, two hundred eighty-one".