207720052 has 6 divisors (see below), whose sum is σ = 363510098. Its totient is φ = 103860024.

The previous prime is 207720049. The next prime is 207720083. The reversal of 207720052 is 250027702.

It can be written as a sum of positive squares in only one way, i.e., 177315856 + 30404196 = 13316^2 + 5514^2 .

It is a junction number, because it is equal to n+sod(n) for n = 207719999 and 207720026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25965003 + ... + 25965010.

Almost surely, 2^207720052 is an apocalyptic number.

It is an amenable number.

207720052 is a deficient number, since it is larger than the sum of its proper divisors (155790046).

207720052 is a wasteful number, since it uses less digits than its factorization.

207720052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51930017 (or 51930015 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 207720052 is about 14412.4963833473. The cubic root of 207720052 is about 592.2332786813.

Adding to 207720052 its reverse (250027702), we get a palindrome (457747754).

The spelling of 207720052 in words is "two hundred seven million, seven hundred twenty thousand, fifty-two".