52747809 has 16 divisors (see below), whose sum is σ = 73623552. Its totient is φ = 33528528.

The previous prime is 52747801. The next prime is 52747813. The reversal of 52747809 is 90874725.

It is not a de Polignac number, because 52747809 - 2³ = 52747801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52747801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24282 + ... + 26364.

It is an arithmetic number, because the mean of its divisors is an integer number (4601472).

Almost surely, 2^52747809 is an apocalyptic number.

It is an amenable number.

52747809 is a deficient number, since it is larger than the sum of its proper divisors (20875743).

52747809 is a wasteful number, since it uses less digits than its factorization.

52747809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476.

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 52747809 is about 7262.7686869403. The cubic root of 52747809 is about 375.0318408519.

The spelling of 52747809 in words is "fifty-two million, seven hundred forty-seven thousand, eight hundred nine".