10109857 has 4 divisors (see below), whose sum is σ = 10549440. Its totient is φ = 9670276.

The previous prime is 10109851. The next prime is 10109861. The reversal of 10109857 is 75890101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10109857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10109851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219757 + ... + 219802.

It is an arithmetic number, because the mean of its divisors is an integer number (2637360).

Almost surely, 2^10109857 is an apocalyptic number.

It is an amenable number.

10109857 is a deficient number, since it is larger than the sum of its proper divisors (439583).

10109857 is an equidigital number, since it uses as much as digits as its factorization.

10109857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439582.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 10109857 is about 3179.6001320921. The cubic root of 10109857 is about 216.2295299545.

Adding to 10109857 its reverse (75890101), we get a palindrome (85999958).

The spelling of 10109857 in words is "ten million, one hundred nine thousand, eight hundred fifty-seven".