103975021 has 2 divisors, whose sum is σ = 103975022. Its totient is φ = 103975020.

The previous prime is 103974971. The next prime is 103975033. The reversal of 103975021 is 120579301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103428900 + 546121 = 10170^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 103975021 - 2¹³ = 103966829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103975061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51987510 + 51987511.

It is an arithmetic number, because the mean of its divisors is an integer number (51987511).

Almost surely, 2^103975021 is an apocalyptic number.

It is an amenable number.

103975021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103975021 is an equidigital number, since it uses as much as digits as its factorization.

103975021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 103975021 is about 10196.8142574041. The cubic root of 103975021 is about 470.2292845364.

The spelling of 103975021 in words is "one hundred three million, nine hundred seventy-five thousand, twenty-one".