108452821 has 2 divisors, whose sum is σ = 108452822. Its totient is φ = 108452820.

The previous prime is 108452803. The next prime is 108452867. The reversal of 108452821 is 128254801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107350321 + 1102500 = 10361^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 108452821 - 2⁵ = 108452789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108452801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54226410 + 54226411.

It is an arithmetic number, because the mean of its divisors is an integer number (54226411).

Almost surely, 2^108452821 is an apocalyptic number.

It is an amenable number.

108452821 is a deficient number, since it is larger than the sum of its proper divisors (1).

108452821 is an equidigital number, since it uses as much as digits as its factorization.

108452821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 108452821 is about 10414.0684172901. The cubic root of 108452821 is about 476.8849510179.

It can be divided in two parts, 108 and 452821, that added together give a square (452929 = 673²).

The spelling of 108452821 in words is "one hundred eight million, four hundred fifty-two thousand, eight hundred twenty-one".