252612109 has 4 divisors (see below), whose sum is σ = 252718204. Its totient is φ = 252506016.

The previous prime is 252612083. The next prime is 252612121. The reversal of 252612109 is 901216252.

252612109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 105062500 + 147549609 = 10250^2 + 12147^2 .

It is a cyclic number.

It is not a de Polignac number, because 252612109 - 2¹⁷ = 252481037 is a prime.

It is a super-2 number, since 2×252612109² = 127625755226855762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252612709) 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, 49392 + ... + 54265.

It is an arithmetic number, because the mean of its divisors is an integer number (63179551).

Almost surely, 2^252612109 is an apocalyptic number.

It is an amenable number.

252612109 is a deficient number, since it is larger than the sum of its proper divisors (106095).

252612109 is a wasteful number, since it uses less digits than its factorization.

252612109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106094.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 252612109 is about 15893.7757943165. The cubic root of 252612109 is about 632.1469616644.

The spelling of 252612109 in words is "two hundred fifty-two million, six hundred twelve thousand, one hundred nine".