40230545 has 4 divisors (see below), whose sum is σ = 48276660. Its totient is φ = 32184432.

The previous prime is 40230527. The next prime is 40230557. The reversal of 40230545 is 54503204.

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 26915344 + 13315201 = 5188^2 + 3649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40230545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40230545.

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, 4023050 + ... + 4023059.

It is an arithmetic number, because the mean of its divisors is an integer number (12069165).

Almost surely, 2^40230545 is an apocalyptic number.

It is an amenable number.

40230545 is a deficient number, since it is larger than the sum of its proper divisors (8046115).

40230545 is an equidigital number, since it uses as much as digits as its factorization.

40230545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8046114.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40230545 is about 6342.7553161067. The cubic root of 40230545 is about 342.6509750511.

Adding to 40230545 its reverse (54503204), we get a palindrome (94733749).

The spelling of 40230545 in words is "forty million, two hundred thirty thousand, five hundred forty-five".