103640045 has 4 divisors (see below), whose sum is σ = 124368060. Its totient is φ = 82912032.

The previous prime is 103640023. The next prime is 103640059. The reversal of 103640045 is 540046301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540046301 = 41 ⋅13171861.

It can be written as a sum of positive squares in 2 ways, for example, as 20811844 + 82828201 = 4562^2 + 9101^2 .

It is a cyclic number.

It is not a de Polignac number, because 103640045 - 2¹⁴ = 103623661 is a prime.

It is a super-3 number, since 3×103640045³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103640045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10364000 + ... + 10364009.

It is an arithmetic number, because the mean of its divisors is an integer number (31092015).

Almost surely, 2^103640045 is an apocalyptic number.

It is an amenable number.

103640045 is a deficient number, since it is larger than the sum of its proper divisors (20728015).

103640045 is an equidigital number, since it uses as much as digits as its factorization.

103640045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20728014.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 103640045 is about 10180.3754842344. The cubic root of 103640045 is about 469.7237625291.

Adding to 103640045 its reverse (540046301), we get a palindrome (643686346).

The spelling of 103640045 in words is "one hundred three million, six hundred forty thousand, forty-five".