100255261 has 2 divisors, whose sum is σ = 100255262. Its totient is φ = 100255260.

The previous prime is 100255247. The next prime is 100255283. The reversal of 100255261 is 162552001.

It is an a-pointer prime, because the next prime (100255283) can be obtained adding 100255261 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 155236 = 10005^2 + 394^2 .

It is an emirp because it is prime and its reverse (162552001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100255261 - 2¹⁹ = 99730973 is a prime.

It is a super-2 number, since 2×100255261² = 20102234716356242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100255241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50127630 + 50127631.

It is an arithmetic number, because the mean of its divisors is an integer number (50127631).

Almost surely, 2^100255261 is an apocalyptic number.

It is an amenable number.

100255261 is a deficient number, since it is larger than the sum of its proper divisors (1).

100255261 is an equidigital number, since it uses as much as digits as its factorization.

100255261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 100255261 is about 10012.7549156064. The cubic root of 100255261 is about 464.5534866645.

The spelling of 100255261 in words is "one hundred million, two hundred fifty-five thousand, two hundred sixty-one".