103133521 has 2 divisors, whose sum is σ = 103133522. Its totient is φ = 103133520.

The previous prime is 103133507. The next prime is 103133531. The reversal of 103133521 is 125331301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101787921 + 1345600 = 10089^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 103133521 - 2¹³ = 103125329 is a prime.

It is not a weakly prime, because it can be changed into another prime (103133531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51566760 + 51566761.

It is an arithmetic number, because the mean of its divisors is an integer number (51566761).

Almost surely, 2^103133521 is an apocalyptic number.

It is an amenable number.

103133521 is a deficient number, since it is larger than the sum of its proper divisors (1).

103133521 is an equidigital number, since it uses as much as digits as its factorization.

103133521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 103133521 is about 10155.4675421666. The cubic root of 103133521 is about 468.9572794454.

Adding to 103133521 its reverse (125331301), we get a palindrome (228464822).

The spelling of 103133521 in words is "one hundred three million, one hundred thirty-three thousand, five hundred twenty-one".