103725221 has 2 divisors, whose sum is σ = 103725222. Its totient is φ = 103725220.

The previous prime is 103725217. The next prime is 103725227. The reversal of 103725221 is 122527301.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80550625 + 23174596 = 8975^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 103725221 - 2² = 103725217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103725227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51862610 + 51862611.

It is an arithmetic number, because the mean of its divisors is an integer number (51862611).

Almost surely, 2^103725221 is an apocalyptic number.

It is an amenable number.

103725221 is a deficient number, since it is larger than the sum of its proper divisors (1).

103725221 is an equidigital number, since it uses as much as digits as its factorization.

103725221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 103725221 is about 10184.5579678256. The cubic root of 103725221 is about 469.8524072556.

The spelling of 103725221 in words is "one hundred three million, seven hundred twenty-five thousand, two hundred twenty-one".