253645123 has 2 divisors, whose sum is σ = 253645124. Its totient is φ = 253645122.

The previous prime is 253645109. The next prime is 253645141. The reversal of 253645123 is 321546352.

It is a happy number.

253645123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253645123 - 2¹³ = 253636931 is a prime.

It is not a weakly prime, because it can be changed into another prime (253645103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126822561 + 126822562.

It is an arithmetic number, because the mean of its divisors is an integer number (126822562).

Almost surely, 2^253645123 is an apocalyptic number.

253645123 is a deficient number, since it is larger than the sum of its proper divisors (1).

253645123 is an equidigital number, since it uses as much as digits as its factorization.

253645123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 31.

The square root of 253645123 is about 15926.2400773064. The cubic root of 253645123 is about 633.0074753686.

The spelling of 253645123 in words is "two hundred fifty-three million, six hundred forty-five thousand, one hundred twenty-three".