40553385 has 16 divisors (see below), whose sum is σ = 65669184. Its totient is φ = 21367232.

The previous prime is 40553377. The next prime is 40553399. The reversal of 40553385 is 58335504.

It is a cyclic number.

It is not a de Polignac number, because 40553385 - 2³ = 40553377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15042 + ... + 17531.

It is an arithmetic number, because the mean of its divisors is an integer number (4104324).

Almost surely, 2^40553385 is an apocalyptic number.

It is an amenable number.

40553385 is a deficient number, since it is larger than the sum of its proper divisors (25115799).

40553385 is a wasteful number, since it uses less digits than its factorization.

40553385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32664.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 40553385 is about 6368.1539711285. The cubic root of 40553385 is about 343.5650968118.

Adding to 40553385 its reverse (58335504), we get a palindrome (98888889).

The spelling of 40553385 in words is "forty million, five hundred fifty-three thousand, three hundred eighty-five".