252216207 has 16 divisors (see below), whose sum is σ = 379233280. Its totient is φ = 165633336.

The previous prime is 252216197. The next prime is 252216221. The reversal of 252216207 is 702612252.

It is not a de Polignac number, because 252216207 - 2¹² = 252212111 is a prime.

It is a super-2 number, since 2×252216207² = 127226030146933698, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252216287) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 67903 + ... + 71520.

It is an arithmetic number, because the mean of its divisors is an integer number (23702080).

Almost surely, 2^252216207 is an apocalyptic number.

252216207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

252216207 is a deficient number, since it is larger than the sum of its proper divisors (127017073).

252216207 is a wasteful number, since it uses less digits than its factorization.

252216207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139499 (or 139493 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 252216207 is about 15881.3162867566. The cubic root of 252216207 is about 631.8165484943.

Adding to 252216207 its reverse (702612252), we get a palindrome (954828459).

The spelling of 252216207 in words is "two hundred fifty-two million, two hundred sixteen thousand, two hundred seven".