1057509403 has 2 divisors, whose sum is σ = 1057509404. Its totient is φ = 1057509402.

The previous prime is 1057509373. The next prime is 1057509407. The reversal of 1057509403 is 3049057501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057509403 is a prime.

It is a super-2 number, since 2×1057509403² = 2236652274866832818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1057509407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528754701 + 528754702.

It is an arithmetic number, because the mean of its divisors is an integer number (528754702).

Almost surely, 2^1057509403 is an apocalyptic number.

1057509403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057509403 is an equidigital number, since it uses as much as digits as its factorization.

1057509403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 1057509403 is about 32519.3696587126. The cubic root of 1057509403 is about 1018.8136286654.

The spelling of 1057509403 in words is "one billion, fifty-seven million, five hundred nine thousand, four hundred three".