100401503 has 2 divisors, whose sum is σ = 100401504. Its totient is φ = 100401502.

The previous prime is 100401493. The next prime is 100401527. The reversal of 100401503 is 305104001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100401503 - 2⁴ = 100401487 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100401563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50200751 + 50200752.

It is an arithmetic number, because the mean of its divisors is an integer number (50200752).

Almost surely, 2^100401503 is an apocalyptic number.

100401503 is a deficient number, since it is larger than the sum of its proper divisors (1).

100401503 is an equidigital number, since it uses as much as digits as its factorization.

100401503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 100401503 is about 10020.0550397690. The cubic root of 100401503 is about 464.7792577738.

Adding to 100401503 its reverse (305104001), we get a palindrome (405505504).

The spelling of 100401503 in words is "one hundred million, four hundred one thousand, five hundred three".