10491857 has 16 divisors (see below), whose sum is σ = 11673600. Its totient is φ = 9389520.

The previous prime is 10491853. The next prime is 10491869. The reversal of 10491857 is 75819401.

It is a cyclic number.

It is not a de Polignac number, because 10491857 - 2² = 10491853 is a prime.

It is a super-2 number, since 2×10491857² = 220158126616898, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (10491853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27494 + ... + 27872.

It is an arithmetic number, because the mean of its divisors is an integer number (729600).

Almost surely, 2^10491857 is an apocalyptic number.

It is an amenable number.

10491857 is a deficient number, since it is larger than the sum of its proper divisors (1181743).

10491857 is a wasteful number, since it uses less digits than its factorization.

10491857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476.

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

The square root of 10491857 is about 3239.1136133208. The cubic root of 10491857 is about 218.9193353319.

The spelling of 10491857 in words is "ten million, four hundred ninety-one thousand, eight hundred fifty-seven".