40305550 has 12 divisors (see below), whose sum is σ = 74968416. Its totient is φ = 16122200.

The previous prime is 40305523. The next prime is 40305553. The reversal of 40305550 is 5550304.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40305553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 403006 + ... + 403105.

It is an arithmetic number, because the mean of its divisors is an integer number (6247368).

Almost surely, 2^40305550 is an apocalyptic number.

40305550 is a deficient number, since it is larger than the sum of its proper divisors (34662866).

40305550 is a wasteful number, since it uses less digits than its factorization.

40305550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806123 (or 806118 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 40305550 is about 6348.6652140430. The cubic root of 40305550 is about 342.8637866603.

Adding to 40305550 its reverse (5550304), we get a palindrome (45855854).

The spelling of 40305550 in words is "forty million, three hundred five thousand, five hundred fifty".