253565419 has 2 divisors, whose sum is σ = 253565420. Its totient is φ = 253565418.

The previous prime is 253565383. The next prime is 253565441. The reversal of 253565419 is 914565352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253565419 - 2¹¹ = 253563371 is a prime.

It is a super-2 number, since 2×253565419² = 128590843425291122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (253565479) 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 as a sum of consecutive naturals, namely, 126782709 + 126782710.

It is an arithmetic number, because the mean of its divisors is an integer number (126782710).

Almost surely, 2^253565419 is an apocalyptic number.

253565419 is a deficient number, since it is larger than the sum of its proper divisors (1).

253565419 is an equidigital number, since it uses as much as digits as its factorization.

253565419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162000, while the sum is 40.

The square root of 253565419 is about 15923.7375951753. The cubic root of 253565419 is about 632.9411642001.

The spelling of 253565419 in words is "two hundred fifty-three million, five hundred sixty-five thousand, four hundred nineteen".