4256523 has 8 divisors (see below), whose sum is σ = 6306000. Its totient is φ = 2837664.

The previous prime is 4256509. The next prime is 4256537. The reversal of 4256523 is 3256524.

4256523 is a `hidden beast` number, since 4 + 2 + 5 + 652 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (4256509) and next prime (4256537).

It is not a de Polignac number, because 4256523 - 2⁴ = 4256507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 157649 = 4256523 / (4 + 2 + 5 + 6 + 5 + 2 + 3).

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 5 + 6 + 5⁵ + 2⁵ + 3¹⁰ .

It is not an unprimeable number, because it can be changed into a prime (4256563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78798 + ... + 78851.

It is an arithmetic number, because the mean of its divisors is an integer number (788250).

Almost surely, 2^4256523 is an apocalyptic number.

4256523 is a deficient number, since it is larger than the sum of its proper divisors (2049477).

4256523 is a wasteful number, since it uses less digits than its factorization.

4256523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157658 (or 157652 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 4256523 is about 2063.1342661107. The cubic root of 4256523 is about 162.0634182431.

Subtracting from 4256523 its reverse (3256524), we obtain a palindrome (999999).

It can be divided in two parts, 42 and 56523, that added together give a palindrome (56565).

The spelling of 4256523 in words is "four million, two hundred fifty-six thousand, five hundred twenty-three".