253121342251 has 2 divisors, whose sum is σ = 253121342252. Its totient is φ = 253121342250.

The previous prime is 253121342213. The next prime is 253121342281. The reversal of 253121342251 is 152243121352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253121342251 - 2²⁵ = 253087787819 is a prime.

It is not a weakly prime, because it can be changed into another prime (253121342281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126560671125 + 126560671126.

It is an arithmetic number, because the mean of its divisors is an integer number (126560671126).

Almost surely, 2^253121342251 is an apocalyptic number.

253121342251 is a deficient number, since it is larger than the sum of its proper divisors (1).

253121342251 is an equidigital number, since it uses as much as digits as its factorization.

253121342251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The spelling of 253121342251 in words is "two hundred fifty-three billion, one hundred twenty-one million, three hundred forty-two thousand, two hundred fifty-one".