103455221 has 2 divisors, whose sum is σ = 103455222. Its totient is φ = 103455220.

The previous prime is 103455167. The next prime is 103455223. The reversal of 103455221 is 122554301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 12348196 = 9545^2 + 3514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103455221 is a prime.

Together with 103455223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103455223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51727610 + 51727611.

It is an arithmetic number, because the mean of its divisors is an integer number (51727611).

Almost surely, 2^103455221 is an apocalyptic number.

It is an amenable number.

103455221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103455221 is an equidigital number, since it uses as much as digits as its factorization.

103455221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 103455221 is about 10171.2939688124. The cubic root of 103455221 is about 469.4443728296. Note that the first 3 decimals are identical.

The spelling of 103455221 in words is "one hundred three million, four hundred fifty-five thousand, two hundred twenty-one".