100562261 has 2 divisors, whose sum is σ = 100562262. Its totient is φ = 100562260.

The previous prime is 100562249. The next prime is 100562291. The reversal of 100562261 is 162265001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100120036 + 442225 = 10006^2 + 665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100562261 is a prime.

It is a super-2 number, since 2×100562261² = 20225536674864242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100562291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50281130 + 50281131.

It is an arithmetic number, because the mean of its divisors is an integer number (50281131).

Almost surely, 2^100562261 is an apocalyptic number.

It is an amenable number.

100562261 is a deficient number, since it is larger than the sum of its proper divisors (1).

100562261 is an equidigital number, since it uses as much as digits as its factorization.

100562261 is an evil number, because the sum of its binary digits is even.

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

The square root of 100562261 is about 10028.0736435270. The cubic root of 100562261 is about 465.0271861394.

The spelling of 100562261 in words is "one hundred million, five hundred sixty-two thousand, two hundred sixty-one".