253333321261 has 2 divisors, whose sum is σ = 253333321262. Its totient is φ = 253333321260.

The previous prime is 253333321193. The next prime is 253333321331. The reversal of 253333321261 is 162123333352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242580875625 + 10752445636 = 492525^2 + 103694^2 .

It is a cyclic number.

It is not a de Polignac number, because 253333321261 - 2⁷ = 253333321133 is a prime.

It is a super-2 number, since 2×253333321261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253333321361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126666660630 + 126666660631.

It is an arithmetic number, because the mean of its divisors is an integer number (126666660631).

Almost surely, 2^253333321261 is an apocalyptic number.

It is an amenable number.

253333321261 is a deficient number, since it is larger than the sum of its proper divisors (1).

253333321261 is an equidigital number, since it uses as much as digits as its factorization.

253333321261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 34.

The spelling of 253333321261 in words is "two hundred fifty-three billion, three hundred thirty-three million, three hundred twenty-one thousand, two hundred sixty-one".