253128829 has 2 divisors, whose sum is σ = 253128830. Its totient is φ = 253128828.

The previous prime is 253128797. The next prime is 253128923. The reversal of 253128829 is 928821352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253128100 + 729 = 15910^2 + 27^2 .

It is a cyclic number.

It is not a de Polignac number, because 253128829 - 2⁵ = 253128797 is a prime.

It is a super-2 number, since 2×253128829² = 128148408141822482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 253128791 and 253128800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253128329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126564414 + 126564415.

It is an arithmetic number, because the mean of its divisors is an integer number (126564415).

Almost surely, 2^253128829 is an apocalyptic number.

It is an amenable number.

253128829 is a deficient number, since it is larger than the sum of its proper divisors (1).

253128829 is an equidigital number, since it uses as much as digits as its factorization.

253128829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 40.

The square root of 253128829 is about 15910.0229101029. The cubic root of 253128829 is about 632.5776885935.

The spelling of 253128829 in words is "two hundred fifty-three million, one hundred twenty-eight thousand, eight hundred twenty-nine".