40345550 has 48 divisors (see below), whose sum is σ = 90291840. Its totient is φ = 13102560.

The previous prime is 40345523. The next prime is 40345559. The reversal of 40345550 is 5554304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40345559) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 3617 + ... + 9683.

It is an arithmetic number, because the mean of its divisors is an integer number (1881080).

Almost surely, 2^40345550 is an apocalyptic number.

40345550 is an abundant number, since it is smaller than the sum of its proper divisors (49946290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40345550 is a wasteful number, since it uses less digits than its factorization.

40345550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105 (or 6100 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 40345550 is about 6351.8147013275. The cubic root of 40345550 is about 342.9771706906.

Adding to 40345550 its reverse (5554304), we get a palindrome (45899854).

The spelling of 40345550 in words is "forty million, three hundred forty-five thousand, five hundred fifty".