4257081 has 6 divisors (see below), whose sum is σ = 6149130. Its totient is φ = 2838048.

The previous prime is 4257067. The next prime is 4257101. The reversal of 4257081 is 1807524.

4257081 = 384² + 385² + ... + 410².

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 95481 = 2040^2 + 309^2 .

It is not a de Polignac number, because 4257081 - 2⁶ = 4257017 is a prime.

It is a super-2 number, since 2×4257081² = 36245477281122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4257041) 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 in 5 ways as a sum of consecutive naturals, for example, 236496 + ... + 236513.

It is an arithmetic number, because the mean of its divisors is an integer number (1024855).

Almost surely, 2^4257081 is an apocalyptic number.

It is an amenable number.

4257081 is a deficient number, since it is larger than the sum of its proper divisors (1892049).

4257081 is a wasteful number, since it uses less digits than its factorization.

4257081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473015 (or 473012 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 4257081 is about 2063.2694928196. The cubic root of 4257081 is about 162.0704997222.

The spelling of 4257081 in words is "four million, two hundred fifty-seven thousand, eighty-one".