254253661 has 16 divisors (see below), whose sum is σ = 275447808. Its totient is φ = 233996400.

The previous prime is 254253647. The next prime is 254253719. The reversal of 254253661 is 166352452.

It is a cyclic number.

It is not a de Polignac number, because 254253661 - 2⁷ = 254253533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254253641) 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 15 ways as a sum of consecutive naturals, for example, 135250 + ... + 137116.

It is an arithmetic number, because the mean of its divisors is an integer number (17215488).

Almost surely, 2^254253661 is an apocalyptic number.

It is an amenable number.

254253661 is a deficient number, since it is larger than the sum of its proper divisors (21194147).

254253661 is a wasteful number, since it uses less digits than its factorization.

254253661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112.

The product of its digits is 43200, while the sum is 34.

The square root of 254253661 is about 15945.3335179920. Note that the first 3 decimals coincide. The cubic root of 254253661 is about 633.5133021022.

The spelling of 254253661 in words is "two hundred fifty-four million, two hundred fifty-three thousand, six hundred sixty-one".