253168609 has 4 divisors (see below), whose sum is σ = 253203220. Its totient is φ = 253134000.

The previous prime is 253168603. The next prime is 253168621. The reversal of 253168609 is 906861352.

253168609 = T₁₂₉₉₀ + T₁₂₉₉₁ + T₁₂₉₉₂.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 116208400 + 136960209 = 10780^2 + 11703^2 .

It is a cyclic number.

It is not a de Polignac number, because 253168609 - 2⁵ = 253168577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253168603) 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, 1554 + ... + 22555.

It is an arithmetic number, because the mean of its divisors is an integer number (63300805).

Almost surely, 2^253168609 is an apocalyptic number.

253168609 is the 12992-nd centered triangular number.

It is an amenable number.

253168609 is a deficient number, since it is larger than the sum of its proper divisors (34611).

253168609 is a wasteful number, since it uses less digits than its factorization.

253168609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34610.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 253168609 is about 15911.2730163240. The cubic root of 253168609 is about 632.6108240559.

The spelling of 253168609 in words is "two hundred fifty-three million, one hundred sixty-eight thousand, six hundred nine".