253126121 has 2 divisors, whose sum is σ = 253126122. Its totient is φ = 253126120.

The previous prime is 253126061. The next prime is 253126187. The reversal of 253126121 is 121621352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251064025 + 2062096 = 15845^2 + 1436^2 .

It is a cyclic number.

It is not a de Polignac number, because 253126121 - 2²² = 248931817 is a prime.

It is not a weakly prime, because it can be changed into another prime (253126421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126563060 + 126563061.

It is an arithmetic number, because the mean of its divisors is an integer number (126563061).

Almost surely, 2^253126121 is an apocalyptic number.

It is an amenable number.

253126121 is a deficient number, since it is larger than the sum of its proper divisors (1).

253126121 is an equidigital number, since it uses as much as digits as its factorization.

253126121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 253126121 is about 15909.9378062895. The cubic root of 253126121 is about 632.5754327903.

Adding to 253126121 its reverse (121621352), we get a palindrome (374747473).

The spelling of 253126121 in words is "two hundred fifty-three million, one hundred twenty-six thousand, one hundred twenty-one".