40551423 has 16 divisors (see below), whose sum is σ = 59298816. Its totient is φ = 24445440.

The previous prime is 40551361. The next prime is 40551431. The reversal of 40551423 is 32415504.

It is a Cunningham number, because it is equal to 6368²-1.

It is not a de Polignac number, because 40551423 - 2⁶ = 40551359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40551393 and 40551402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40551473) 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 15 ways as a sum of consecutive naturals, for example, 3186 + ... + 9552.

It is an arithmetic number, because the mean of its divisors is an integer number (3706176).

Almost surely, 2^40551423 is an apocalyptic number.

40551423 is a deficient number, since it is larger than the sum of its proper divisors (18747393).

40551423 is a wasteful number, since it uses less digits than its factorization.

40551423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6574.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40551423 is about 6367.9999214824. Note that the first 4 decimals coincide. The cubic root of 40551423 is about 343.5595560858.

Adding to 40551423 its reverse (32415504), we get a palindrome (72966927).

The spelling of 40551423 in words is "forty million, five hundred fifty-one thousand, four hundred twenty-three".