4252581 has 10 divisors (see below), whose sum is σ = 6352742. Its totient is φ = 2835000.

The previous prime is 4252559. The next prime is 4252583. The reversal of 4252581 is 1852524.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3272481 + 980100 = 1809^2 + 990^2 .

It is not a de Polignac number, because 4252581 - 2¹³ = 4244389 is a prime.

It is a super-2 number, since 2×4252581² = 36168890323122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4252583) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26170 + ... + 26331.

Almost surely, 2^4252581 is an apocalyptic number.

It is an amenable number.

4252581 is a deficient number, since it is larger than the sum of its proper divisors (2100161).

4252581 is an equidigital number, since it uses as much as digits as its factorization.

4252581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52513 (or 52504 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 4252581 is about 2062.1787022467. The cubic root of 4252581 is about 162.0133733816.

The spelling of 4252581 in words is "four million, two hundred fifty-two thousand, five hundred eighty-one".