52845649 has 4 divisors (see below), whose sum is σ = 53569636. Its totient is φ = 52121664.

The previous prime is 52845641. The next prime is 52845691. The reversal of 52845649 is 94654825.

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 20866624 + 31979025 = 4568^2 + 5655^2 .

It is a cyclic number.

It is not a de Polignac number, because 52845649 - 2³ = 52845641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52845641) 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, 361884 + ... + 362029.

It is an arithmetic number, because the mean of its divisors is an integer number (13392409).

Almost surely, 2^52845649 is an apocalyptic number.

It is an amenable number.

52845649 is a deficient number, since it is larger than the sum of its proper divisors (723987).

52845649 is an equidigital number, since it uses as much as digits as its factorization.

52845649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723986.

The product of its digits is 345600, while the sum is 43.

The square root of 52845649 is about 7269.5012896347. The cubic root of 52845649 is about 375.2635752907.

The spelling of 52845649 in words is "fifty-two million, eight hundred forty-five thousand, six hundred forty-nine".