101240501 has 2 divisors, whose sum is σ = 101240502. Its totient is φ = 101240500.

The previous prime is 101240471. The next prime is 101240507. The reversal of 101240501 is 105042101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91661476 + 9579025 = 9574^2 + 3095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101240501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101240507) 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, 50620250 + 50620251.

It is an arithmetic number, because the mean of its divisors is an integer number (50620251).

Almost surely, 2^101240501 is an apocalyptic number.

It is an amenable number.

101240501 is a deficient number, since it is larger than the sum of its proper divisors (1).

101240501 is an equidigital number, since it uses as much as digits as its factorization.

101240501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 101240501 is about 10061.8338785730. The cubic root of 101240501 is about 466.0702998315.

Adding to 101240501 its reverse (105042101), we get a palindrome (206282602).

The spelling of 101240501 in words is "one hundred one million, two hundred forty thousand, five hundred one".