253121035 has 16 divisors (see below), whose sum is σ = 309657600. Its totient is φ = 198586080.

The previous prime is 253121023. The next prime is 253121039. The reversal of 253121035 is 530121352.

It is not a de Polignac number, because 253121035 - 2⁹ = 253120523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253120997 and 253121015.

It is not an unprimeable number, because it can be changed into a prime (253121039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68854 + ... + 72436.

It is an arithmetic number, because the mean of its divisors is an integer number (19353600).

Almost surely, 2^253121035 is an apocalyptic number.

253121035 is a deficient number, since it is larger than the sum of its proper divisors (56536565).

253121035 is a wasteful number, since it uses less digits than its factorization.

253121035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3858.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 253121035 is about 15909.7779682810. Note that the first 3 decimals coincide. The cubic root of 253121035 is about 632.5711960351.

Adding to 253121035 its reverse (530121352), we get a palindrome (783242387).

The spelling of 253121035 in words is "two hundred fifty-three million, one hundred twenty-one thousand, thirty-five".