253438441 has 2 divisors, whose sum is σ = 253438442. Its totient is φ = 253438440.

The previous prime is 253438379. The next prime is 253438457. The reversal of 253438441 is 144834352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201526416 + 51912025 = 14196^2 + 7205^2 .

It is a cyclic number.

It is not a de Polignac number, because 253438441 - 2⁷ = 253438313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253438397 and 253438406.

It is not a weakly prime, because it can be changed into another prime (253438481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126719220 + 126719221.

It is an arithmetic number, because the mean of its divisors is an integer number (126719221).

Almost surely, 2^253438441 is an apocalyptic number.

It is an amenable number.

253438441 is a deficient number, since it is larger than the sum of its proper divisors (1).

253438441 is an equidigital number, since it uses as much as digits as its factorization.

253438441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 34.

The square root of 253438441 is about 15919.7500294446. The cubic root of 253438441 is about 632.8354938728.

The spelling of 253438441 in words is "two hundred fifty-three million, four hundred thirty-eight thousand, four hundred forty-one".