100245553 has 2 divisors, whose sum is σ = 100245554. Its totient is φ = 100245552.

The previous prime is 100245521. The next prime is 100245557. The reversal of 100245553 is 355542001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58874929 + 41370624 = 7673^2 + 6432^2 .

It is a cyclic number.

It is not a de Polignac number, because 100245553 - 2⁵ = 100245521 is a prime.

It is not a weakly prime, because it can be changed into another prime (100245557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50122776 + 50122777.

It is an arithmetic number, because the mean of its divisors is an integer number (50122777).

Almost surely, 2^100245553 is an apocalyptic number.

It is an amenable number.

100245553 is a deficient number, since it is larger than the sum of its proper divisors (1).

100245553 is an equidigital number, since it uses as much as digits as its factorization.

100245553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 100245553 is about 10012.2701222051. The cubic root of 100245553 is about 464.5384915052.

Adding to 100245553 its reverse (355542001), we get a palindrome (455787554).

The spelling of 100245553 in words is "one hundred million, two hundred forty-five thousand, five hundred fifty-three".