101791045 has 4 divisors (see below), whose sum is σ = 122149260. Its totient is φ = 81432832.

The previous prime is 101791003. The next prime is 101791051. The reversal of 101791045 is 540197101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29778849 + 72012196 = 5457^2 + 8486^2 .

It is a cyclic number.

It is not a de Polignac number, because 101791045 - 2¹¹ = 101788997 is a prime.

It is a super-2 number, since 2×101791045² = 20722833684384050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10179100 + ... + 10179109.

It is an arithmetic number, because the mean of its divisors is an integer number (30537315).

Almost surely, 2^101791045 is an apocalyptic number.

It is an amenable number.

101791045 is a deficient number, since it is larger than the sum of its proper divisors (20358215).

101791045 is an equidigital number, since it uses as much as digits as its factorization.

101791045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20358214.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 101791045 is about 10089.1548208956. The cubic root of 101791045 is about 466.9136003227.

The spelling of 101791045 in words is "one hundred one million, seven hundred ninety-one thousand, forty-five".