52890913 has 4 divisors (see below), whose sum is σ = 52941460. Its totient is φ = 52840368.

The previous prime is 52890911. The next prime is 52890941. The reversal of 52890913 is 31909825.

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 18045504 + 34845409 = 4248^2 + 5903^2 .

It is a cyclic number.

It is not a de Polignac number, because 52890913 - 2¹ = 52890911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52890911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23670 + ... + 25807.

It is an arithmetic number, because the mean of its divisors is an integer number (13235365).

Almost surely, 2^52890913 is an apocalyptic number.

It is an amenable number.

52890913 is a deficient number, since it is larger than the sum of its proper divisors (50547).

52890913 is a wasteful number, since it uses less digits than its factorization.

52890913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50546.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 52890913 is about 7272.6139042300. The cubic root of 52890913 is about 375.3706864937.

The spelling of 52890913 in words is "fifty-two million, eight hundred ninety thousand, nine hundred thirteen".