253856023 has 4 divisors (see below), whose sum is σ = 253894768. Its totient is φ = 253817280.

The previous prime is 253856021. The next prime is 253856033. The reversal of 253856023 is 320658352.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 253856023 - 2¹ = 253856021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253856023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253856021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6843 + ... + 23548.

It is an arithmetic number, because the mean of its divisors is an integer number (63473692).

Almost surely, 2^253856023 is an apocalyptic number.

253856023 is a deficient number, since it is larger than the sum of its proper divisors (38745).

253856023 is an equidigital number, since it uses as much as digits as its factorization.

253856023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38744.

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

The square root of 253856023 is about 15932.8598500081. The cubic root of 253856023 is about 633.1828704126.

The spelling of 253856023 in words is "two hundred fifty-three million, eight hundred fifty-six thousand, twenty-three".