253380447 has 16 divisors (see below), whose sum is σ = 395136000. Its totient is φ = 160029432.

The previous prime is 253380437. The next prime is 253380473. The reversal of 253380447 is 744083352.

It is a happy number.

253380447 is a `hidden beast` number, since 2 + 533 + 80 + 4 + 47 = 666.

It is not a de Polignac number, because 253380447 - 2⁶ = 253380383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253380437) 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, 246447 + ... + 247472.

It is an arithmetic number, because the mean of its divisors is an integer number (24696000).

Almost surely, 2^253380447 is an apocalyptic number.

253380447 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

253380447 is a deficient number, since it is larger than the sum of its proper divisors (141755553).

253380447 is a wasteful number, since it uses less digits than its factorization.

253380447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493947 (or 493941 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 253380447 is about 15917.9284770349. The cubic root of 253380447 is about 632.7872198735.

The spelling of 253380447 in words is "two hundred fifty-three million, three hundred eighty thousand, four hundred forty-seven".