101440541 has 4 divisors (see below), whose sum is σ = 102121500. Its totient is φ = 100759584.

The previous prime is 101440489. The next prime is 101440543. The reversal of 101440541 is 145044101.

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 19175641 + 82264900 = 4379^2 + 9070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101440541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101440543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340256 + ... + 340553.

It is an arithmetic number, because the mean of its divisors is an integer number (25530375).

Almost surely, 2^101440541 is an apocalyptic number.

It is an amenable number.

101440541 is a deficient number, since it is larger than the sum of its proper divisors (680959).

101440541 is an equidigital number, since it uses as much as digits as its factorization.

101440541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680958.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 101440541 is about 10071.7695068940. The cubic root of 101440541 is about 466.3770656132.

Adding to 101440541 its reverse (145044101), we get a palindrome (246484642).

The spelling of 101440541 in words is "one hundred one million, four hundred forty thousand, five hundred forty-one".