108020251 has 4 divisors (see below), whose sum is σ = 108402232. Its totient is φ = 107638272.

The previous prime is 108020249. The next prime is 108020293. The reversal of 108020251 is 152020801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108020251 - 2¹ = 108020249 is a prime.

It is a super-2 number, since 2×108020251² = 23336749252206002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190566 + ... + 191131.

It is an arithmetic number, because the mean of its divisors is an integer number (27100558).

Almost surely, 2^108020251 is an apocalyptic number.

108020251 is a deficient number, since it is larger than the sum of its proper divisors (381981).

108020251 is an equidigital number, since it uses as much as digits as its factorization.

108020251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381980.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 108020251 is about 10393.2791264355. The cubic root of 108020251 is about 476.2500789698.

The spelling of 108020251 in words is "one hundred eight million, twenty thousand, two hundred fifty-one".