52800921 has 6 divisors (see below), whose sum is σ = 76268010. Its totient is φ = 35200608.

The previous prime is 52800919. The next prime is 52800949. The reversal of 52800921 is 12900825.

It can be written as a sum of positive squares in only one way, i.e., 35462025 + 17338896 = 5955^2 + 4164^2 .

It is not a de Polignac number, because 52800921 - 2¹ = 52800919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52800901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2933376 + ... + 2933393.

It is an arithmetic number, because the mean of its divisors is an integer number (12711335).

Almost surely, 2^52800921 is an apocalyptic number.

It is an amenable number.

52800921 is a deficient number, since it is larger than the sum of its proper divisors (23467089).

52800921 is a wasteful number, since it uses less digits than its factorization.

52800921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866775 (or 5866772 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 52800921 is about 7266.4242237844. The cubic root of 52800921 is about 375.1576723625.

The spelling of 52800921 in words is "fifty-two million, eight hundred thousand, nine hundred twenty-one".