40550045 has 4 divisors (see below), whose sum is σ = 48660060. Its totient is φ = 32440032.

The previous prime is 40550023. The next prime is 40550057. The reversal of 40550045 is 54005504.

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 27489049 + 13060996 = 5243^2 + 3614^2 .

It is a cyclic number.

It is not a de Polignac number, because 40550045 - 2²⁴ = 23772829 is a prime.

It is a super-2 number, since 2×40550045² = 3288612299004050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40550045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055000 + ... + 4055009.

It is an arithmetic number, because the mean of its divisors is an integer number (12165015).

Almost surely, 2^40550045 is an apocalyptic number.

It is an amenable number.

40550045 is a deficient number, since it is larger than the sum of its proper divisors (8110015).

40550045 is an equidigital number, since it uses as much as digits as its factorization.

40550045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110014.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 40550045 is about 6367.8917233257. The cubic root of 40550045 is about 343.5556644802. Note that the first 3 decimals are identical.

Adding to 40550045 its reverse (54005504), we get a palindrome (94555549).

The spelling of 40550045 in words is "forty million, five hundred fifty thousand, forty-five".