253505919 has 4 divisors (see below), whose sum is σ = 338007896. Its totient is φ = 169003944.

The previous prime is 253505893. The next prime is 253505933. The reversal of 253505919 is 919505352.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253505919 - 2⁸ = 253505663 is a prime.

It is a super-2 number, since 2×253505919² = 128530501936069122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253505939) 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 3 ways as a sum of consecutive naturals, for example, 42250984 + ... + 42250989.

It is an arithmetic number, because the mean of its divisors is an integer number (84501974).

Almost surely, 2^253505919 is an apocalyptic number.

253505919 is a deficient number, since it is larger than the sum of its proper divisors (84501977).

253505919 is an equidigital number, since it uses as much as digits as its factorization.

253505919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84501976.

The product of its (nonzero) digits is 60750, while the sum is 39.

The square root of 253505919 is about 15921.8692055927. The cubic root of 253505919 is about 632.8916530516.

The spelling of 253505919 in words is "two hundred fifty-three million, five hundred five thousand, nine hundred nineteen".