52286721 has 8 divisors (see below), whose sum is σ = 69866784. Its totient is φ = 34782240.

The previous prime is 52286693. The next prime is 52286749. The reversal of 52286721 is 12768225.

It is an interprime number because it is at equal distance from previous prime (52286693) and next prime (52286749).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52286721 - 2⁷ = 52286593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52286771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17260 + ... + 20061.

It is an arithmetic number, because the mean of its divisors is an integer number (8733348).

Almost surely, 2^52286721 is an apocalyptic number.

It is an amenable number.

52286721 is a deficient number, since it is larger than the sum of its proper divisors (17580063).

52286721 is a wasteful number, since it uses less digits than its factorization.

52286721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37791.

The product of its digits is 13440, while the sum is 33.

The square root of 52286721 is about 7230.9557459578. The cubic root of 52286721 is about 373.9358774604.

The spelling of 52286721 in words is "fifty-two million, two hundred eighty-six thousand, seven hundred twenty-one".