100490801 has 2 divisors, whose sum is σ = 100490802. Its totient is φ = 100490800.

The previous prime is 100490783. The next prime is 100490807. The reversal of 100490801 is 108094001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99520576 + 970225 = 9976^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 100490801 - 2⁶ = 100490737 is a prime.

It is not a weakly prime, because it can be changed into another prime (100490807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50245400 + 50245401.

It is an arithmetic number, because the mean of its divisors is an integer number (50245401).

Almost surely, 2^100490801 is an apocalyptic number.

It is an amenable number.

100490801 is a deficient number, since it is larger than the sum of its proper divisors (1).

100490801 is an equidigital number, since it uses as much as digits as its factorization.

100490801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 100490801 is about 10024.5100129632. The cubic root of 100490801 is about 464.9170098936.

The spelling of 100490801 in words is "one hundred million, four hundred ninety thousand, eight hundred one".