4081357 has 16 divisors (see below), whose sum is σ = 4854400. Its totient is φ = 3429216.

The previous prime is 4081351. The next prime is 4081361. The reversal of 4081357 is 7531804.

It is not a de Polignac number, because 4081357 - 2⁷ = 4081229 is a prime.

It is a super-2 number, since 2×4081357² = 33314949922898, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081351) 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 in 15 ways as a sum of consecutive naturals, for example, 24958 + ... + 25120.

It is an arithmetic number, because the mean of its divisors is an integer number (303400).

Almost surely, 2^4081357 is an apocalyptic number.

It is an amenable number.

4081357 is a deficient number, since it is larger than the sum of its proper divisors (773043).

4081357 is an equidigital number, since it uses as much as digits as its factorization.

4081357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 4081357 is about 2020.2368673005. The cubic root of 4081357 is about 159.8091082803.

The spelling of 4081357 in words is "four million, eighty-one thousand, three hundred fifty-seven".