101501 has 2 divisors, whose sum is σ = 101502. Its totient is φ = 101500.

The previous prime is 101489. The next prime is 101503. The reversal of 101501 is 105101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89401 + 12100 = 299^2 + 110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101501 is a prime.

Together with 101503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50750 + 50751.

It is an arithmetic number, because the mean of its divisors is an integer number (50751).

2¹⁰¹⁵⁰¹ is an apocalyptic number.

It is an amenable number.

101501 is a deficient number, since it is larger than the sum of its proper divisors (1).

101501 is an equidigital number, since it uses as much as digits as its factorization.

101501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 101501 is about 318.5922158497. The cubic root of 101501 is about 46.6469701459.

Adding to 101501 its reverse (105101), we get a palindrome (206602).

Subtracting 101501 from its reverse (105101), we obtain a square (3600 = 60²).

The spelling of 101501 in words is "one hundred one thousand, five hundred one".