52811647 has 4 divisors (see below), whose sum is σ = 60356176. Its totient is φ = 45267120.

The previous prime is 52811641. The next prime is 52811651. The reversal of 52811647 is 74611825.

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

It is a cyclic number.

It is not a de Polignac number, because 52811647 - 2²³ = 44423039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52811641) 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, 3772254 + ... + 3772267.

It is an arithmetic number, because the mean of its divisors is an integer number (15089044).

Almost surely, 2^52811647 is an apocalyptic number.

52811647 is a deficient number, since it is larger than the sum of its proper divisors (7544529).

52811647 is an equidigital number, since it uses as much as digits as its factorization.

52811647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544528.

The product of its digits is 13440, while the sum is 34.

The square root of 52811647 is about 7267.1622384532. The cubic root of 52811647 is about 375.1830738686.

The spelling of 52811647 in words is "fifty-two million, eight hundred eleven thousand, six hundred forty-seven".