108152581 has 2 divisors, whose sum is σ = 108152582. Its totient is φ = 108152580.

The previous prime is 108152567. The next prime is 108152621. The reversal of 108152581 is 185251801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57244356 + 50908225 = 7566^2 + 7135^2 .

It is a cyclic number.

It is not a de Polignac number, because 108152581 - 2⁵ = 108152549 is a prime.

It is a super-2 number, since 2×108152581² = 23393961553923122, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108152531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54076290 + 54076291.

It is an arithmetic number, because the mean of its divisors is an integer number (54076291).

Almost surely, 2^108152581 is an apocalyptic number.

It is an amenable number.

108152581 is a deficient number, since it is larger than the sum of its proper divisors (1).

108152581 is an equidigital number, since it uses as much as digits as its factorization.

108152581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 31.

The square root of 108152581 is about 10399.6433111910. The cubic root of 108152581 is about 476.4444760228. Note that the first 4 decimals are identical.

The spelling of 108152581 in words is "one hundred eight million, one hundred fifty-two thousand, five hundred eighty-one".