253569139 has 2 divisors, whose sum is σ = 253569140. Its totient is φ = 253569138.

The previous prime is 253569101. The next prime is 253569167. The reversal of 253569139 is 931965352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253569139 - 2¹¹ = 253567091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253569095 and 253569104.

It is not a weakly prime, because it can be changed into another prime (253569179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126784569 + 126784570.

It is an arithmetic number, because the mean of its divisors is an integer number (126784570).

Almost surely, 2^253569139 is an apocalyptic number.

253569139 is a deficient number, since it is larger than the sum of its proper divisors (1).

253569139 is an equidigital number, since it uses as much as digits as its factorization.

253569139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 218700, while the sum is 43.

The square root of 253569139 is about 15923.8544014946. The cubic root of 253569139 is about 632.9442594298.

The spelling of 253569139 in words is "two hundred fifty-three million, five hundred sixty-nine thousand, one hundred thirty-nine".