16056857 has 4 divisors (see below), whose sum is σ = 17001396. Its totient is φ = 15112320.

The previous prime is 16056841. The next prime is 16056893. The reversal of 16056857 is 75865061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75865061 = 3929 ⋅19309.

It can be written as a sum of positive squares in 2 ways, for example, as 9066121 + 6990736 = 3011^2 + 2644^2 .

It is not a de Polignac number, because 16056857 - 2⁴ = 16056841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16056857.

It is not an unprimeable number, because it can be changed into a prime (16056457) 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, 472244 + ... + 472277.

It is an arithmetic number, because the mean of its divisors is an integer number (4250349).

Almost surely, 2^16056857 is an apocalyptic number.

16056857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

16056857 is a deficient number, since it is larger than the sum of its proper divisors (944539).

16056857 is an equidigital number, since it uses as much as digits as its factorization.

16056857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944538.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 16056857 is about 4007.1008222904. The cubic root of 16056857 is about 252.2823376653.

The spelling of 16056857 in words is "sixteen million, fifty-six thousand, eight hundred fifty-seven".