101045 has 8 divisors (see below), whose sum is σ = 138624. Its totient is φ = 69264.

The previous prime is 101027. The next prime is 101051. The reversal of 101045 is 540101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101045 - 2⁶ = 100981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1409 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (17328).

2¹⁰¹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

101045 is a deficient number, since it is larger than the sum of its proper divisors (37579).

101045 is an equidigital number, since it uses as much as digits as its factorization.

101045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2899.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 101045 is about 317.8757618945. The cubic root of 101045 is about 46.5770104019.

Subtracting from 101045 its product of nonzero digits (20), we obtain a triangular number (101025 = T₄₄₉).

Adding to 101045 its reverse (540101), we get a palindrome (641146).

The spelling of 101045 in words is "one hundred one thousand, forty-five".