108112561 has 2 divisors, whose sum is σ = 108112562. Its totient is φ = 108112560.

The previous prime is 108112547. The next prime is 108112573. The reversal of 108112561 is 165211801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105370225 + 2742336 = 10265^2 + 1656^2 .

It is a cyclic number.

It is not a de Polignac number, because 108112561 - 2¹³ = 108104369 is a prime.

It is not a weakly prime, because it can be changed into another prime (108112541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54056280 + 54056281.

It is an arithmetic number, because the mean of its divisors is an integer number (54056281).

Almost surely, 2^108112561 is an apocalyptic number.

It is an amenable number.

108112561 is a deficient number, since it is larger than the sum of its proper divisors (1).

108112561 is an equidigital number, since it uses as much as digits as its factorization.

108112561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 25.

The square root of 108112561 is about 10397.7190287101. The cubic root of 108112561 is about 476.3857020818.

The spelling of 108112561 in words is "one hundred eight million, one hundred twelve thousand, five hundred sixty-one".