52720205 has 4 divisors (see below), whose sum is σ = 63264252. Its totient is φ = 42176160.

The previous prime is 52720201. The next prime is 52720207. The reversal of 52720205 is 50202725.

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 9647236 + 43072969 = 3106^2 + 6563^2 .

It is not a de Polignac number, because 52720205 - 2² = 52720201 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 (52720201) 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, 5272016 + ... + 5272025.

It is an arithmetic number, because the mean of its divisors is an integer number (15816063).

Almost surely, 2^52720205 is an apocalyptic number.

It is an amenable number.

52720205 is a deficient number, since it is larger than the sum of its proper divisors (10544047).

52720205 is a wasteful number, since it uses less digits than its factorization.

52720205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10544046.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 52720205 is about 7260.8680610517. The cubic root of 52720205 is about 374.9664088430.

It can be divided in two parts, 52720 and 205, that added together give a palindrome (52925).

The spelling of 52720205 in words is "fifty-two million, seven hundred twenty thousand, two hundred five".