4812509 has 4 divisors (see below), whose sum is σ = 5182716. Its totient is φ = 4442304.

The previous prime is 4812503. The next prime is 4812523. The reversal of 4812509 is 9052184.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3161284 + 1651225 = 1778^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 4812509 - 2²⁰ = 3763933 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4812503) 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, 185084 + ... + 185109.

It is an arithmetic number, because the mean of its divisors is an integer number (1295679).

Almost surely, 2^4812509 is an apocalyptic number.

It is an amenable number.

4812509 is a deficient number, since it is larger than the sum of its proper divisors (370207).

4812509 is a wasteful number, since it uses less digits than its factorization.

4812509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370206.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 4812509 is about 2193.7431481374. The cubic root of 4812509 is about 168.8329406637.

The spelling of 4812509 in words is "four million, eight hundred twelve thousand, five hundred nine".