10857491 has 2 divisors, whose sum is σ = 10857492. Its totient is φ = 10857490.

The previous prime is 10857443. The next prime is 10857503. The reversal of 10857491 is 19475801.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10857491 is a prime.

It is a super-2 number, since 2×10857491² = 235770221630162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10857191) 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 as a sum of consecutive naturals, namely, 5428745 + 5428746.

It is an arithmetic number, because the mean of its divisors is an integer number (5428746).

Almost surely, 2^10857491 is an apocalyptic number.

10857491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10857491 is an equidigital number, since it uses as much as digits as its factorization.

10857491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 10857491 is about 3295.0707124431. The cubic root of 10857491 is about 221.4334157406.

The spelling of 10857491 in words is "ten million, eight hundred fifty-seven thousand, four hundred ninety-one".