52750821 has 16 divisors (see below), whose sum is σ = 74459840. Its totient is φ = 33125760.

The previous prime is 52750811. The next prime is 52750861. The reversal of 52750821 is 12805725.

It is not a de Polignac number, because 52750821 - 2⁶ = 52750757 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 (52750801) 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, 7761 + ... + 12873.

It is an arithmetic number, because the mean of its divisors is an integer number (4653740).

Almost surely, 2^52750821 is an apocalyptic number.

It is an amenable number.

52750821 is a deficient number, since it is larger than the sum of its proper divisors (21709019).

52750821 is a wasteful number, since it uses less digits than its factorization.

52750821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 52750821 is about 7262.9760429179. The cubic root of 52750821 is about 375.0389790593.

The spelling of 52750821 in words is "fifty-two million, seven hundred fifty thousand, eight hundred twenty-one".