40605245 has 4 divisors (see below), whose sum is σ = 48726300. Its totient is φ = 32484192.

The previous prime is 40605241. The next prime is 40605251. The reversal of 40605245 is 54250604.

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 7300804 + 33304441 = 2702^2 + 5771^2 .

It is a cyclic number.

It is not a de Polignac number, because 40605245 - 2² = 40605241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40605241) 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, 4060520 + ... + 4060529.

It is an arithmetic number, because the mean of its divisors is an integer number (12181575).

Almost surely, 2^40605245 is an apocalyptic number.

It is an amenable number.

40605245 is a deficient number, since it is larger than the sum of its proper divisors (8121055).

40605245 is an equidigital number, since it uses as much as digits as its factorization.

40605245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121054.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40605245 is about 6372.2244938483. The cubic root of 40605245 is about 343.7114857125.

Adding to 40605245 its reverse (54250604), we get a palindrome (94855849).

The spelling of 40605245 in words is "forty million, six hundred five thousand, two hundred forty-five".