1057994771 has 2 divisors, whose sum is σ = 1057994772. Its totient is φ = 1057994770.

The previous prime is 1057994719. The next prime is 1057994827. The reversal of 1057994771 is 1774997501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1057994771 - 2²² = 1053800467 is a prime.

It is a super-2 number, since 2×1057994771² = 2238705870926684882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1057993771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528997385 + 528997386.

It is an arithmetic number, because the mean of its divisors is an integer number (528997386).

Almost surely, 2^1057994771 is an apocalyptic number.

1057994771 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057994771 is an equidigital number, since it uses as much as digits as its factorization.

1057994771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 555660, while the sum is 50.

The square root of 1057994771 is about 32526.8315548871. The cubic root of 1057994771 is about 1018.9694740562.

The spelling of 1057994771 in words is "one billion, fifty-seven million, nine hundred ninety-four thousand, seven hundred seventy-one".