253446645 has 8 divisors (see below), whose sum is σ = 405514656. Its totient is φ = 135171536.

The previous prime is 253446629. The next prime is 253446647. The reversal of 253446645 is 546644352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253446645 - 2⁴ = 253446629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253446647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8448207 + ... + 8448236.

It is an arithmetic number, because the mean of its divisors is an integer number (50689332).

Almost surely, 2^253446645 is an apocalyptic number.

It is an amenable number.

253446645 is a deficient number, since it is larger than the sum of its proper divisors (152068011).

253446645 is a wasteful number, since it uses less digits than its factorization.

253446645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16896451.

The product of its digits is 345600, while the sum is 39.

The square root of 253446645 is about 15920.0076947218. The cubic root of 253446645 is about 632.8423222586.

The spelling of 253446645 in words is "two hundred fifty-three million, four hundred forty-six thousand, six hundred forty-five".