4256513 has 4 divisors (see below), whose sum is σ = 4480560. Its totient is φ = 4032468.

The previous prime is 4256509. The next prime is 4256537. The reversal of 4256513 is 3156524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4256513 - 2² = 4256509 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 111995 + ... + 112032.

It is an arithmetic number, because the mean of its divisors is an integer number (1120140).

Almost surely, 2^4256513 is an apocalyptic number.

It is an amenable number.

4256513 is a deficient number, since it is larger than the sum of its proper divisors (224047).

4256513 is a wasteful number, since it uses less digits than its factorization.

4256513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224046.

The product of its digits is 3600, while the sum is 26.

The square root of 4256513 is about 2063.1318426121. The cubic root of 4256513 is about 162.0632913292.

The spelling of 4256513 in words is "four million, two hundred fifty-six thousand, five hundred thirteen".