253078261 has 8 divisors (see below), whose sum is σ = 260265344. Its totient is φ = 245909520.

The previous prime is 253078237. The next prime is 253078277. The reversal of 253078261 is 162870352.

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 253078261 - 2⁹ = 253077749 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 (253078211) 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, 26296 + ... + 34606.

It is an arithmetic number, because the mean of its divisors is an integer number (32533168).

Almost surely, 2^253078261 is an apocalyptic number.

It is an amenable number.

253078261 is a deficient number, since it is larger than the sum of its proper divisors (7187083).

253078261 is an equidigital number, since it uses as much as digits as its factorization.

253078261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9171.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 253078261 is about 15908.4336438255. The cubic root of 253078261 is about 632.5355620618.

The spelling of 253078261 in words is "two hundred fifty-three million, seventy-eight thousand, two hundred sixty-one".