108722261 has 2 divisors, whose sum is σ = 108722262. Its totient is φ = 108722260.

The previous prime is 108722231. The next prime is 108722269. The reversal of 108722261 is 162227801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90820900 + 17901361 = 9530^2 + 4231^2 .

It is a cyclic number.

It is not a de Polignac number, because 108722261 - 2⁶ = 108722197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108722269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54361130 + 54361131.

It is an arithmetic number, because the mean of its divisors is an integer number (54361131).

Almost surely, 2^108722261 is an apocalyptic number.

It is an amenable number.

108722261 is a deficient number, since it is larger than the sum of its proper divisors (1).

108722261 is an equidigital number, since it uses as much as digits as its factorization.

108722261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 108722261 is about 10426.9967392342. The cubic root of 108722261 is about 477.2795484668.

The spelling of 108722261 in words is "one hundred eight million, seven hundred twenty-two thousand, two hundred sixty-one".