253995645 has 8 divisors (see below), whose sum is σ = 406393056. Its totient is φ = 135464336.

The previous prime is 253995641. The next prime is 253995653. The reversal of 253995645 is 546599352.

It is a happy number.

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 253995645 - 2² = 253995641 is a prime.

It is a super-3 number, since 3×253995645³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253995594 and 253995603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253995641) 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, 8466507 + ... + 8466536.

It is an arithmetic number, because the mean of its divisors is an integer number (50799132).

Almost surely, 2^253995645 is an apocalyptic number.

It is an amenable number.

253995645 is a deficient number, since it is larger than the sum of its proper divisors (152397411).

253995645 is a wasteful number, since it uses less digits than its factorization.

253995645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16933051.

The product of its digits is 1458000, while the sum is 48.

The square root of 253995645 is about 15937.2408214220. The cubic root of 253995645 is about 633.2989336502.

The spelling of 253995645 in words is "two hundred fifty-three million, nine hundred ninety-five thousand, six hundred forty-five".