40551393 has 16 divisors (see below), whose sum is σ = 55137600. Its totient is φ = 26505024.

The previous prime is 40551361. The next prime is 40551431. The reversal of 40551393 is 39315504.

40551393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40551393 - 2⁵ = 40551361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40551393.

It is not an unprimeable number, because it can be changed into a prime (40551893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36555 + ... + 37647.

It is an arithmetic number, because the mean of its divisors is an integer number (3446100).

Almost surely, 2^40551393 is an apocalyptic number.

It is an amenable number.

40551393 is a deficient number, since it is larger than the sum of its proper divisors (14586207).

40551393 is a wasteful number, since it uses less digits than its factorization.

40551393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 40551393 is about 6367.9975659543. The cubic root of 40551393 is about 343.5594713638.

Adding to 40551393 its reverse (39315504), we get a palindrome (79866897).

The spelling of 40551393 in words is "forty million, five hundred fifty-one thousand, three hundred ninety-three".