40544451 has 6 divisors (see below), whose sum is σ = 58564220. Its totient is φ = 27029628.

The previous prime is 40544437. The next prime is 40544467. The reversal of 40544451 is 15444504.

It is not a de Polignac number, because 40544451 - 2¹³ = 40536259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40544401) 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, 2252461 + ... + 2252478.

Almost surely, 2^40544451 is an apocalyptic number.

40544451 is a deficient number, since it is larger than the sum of its proper divisors (18019769).

40544451 is a wasteful number, since it uses less digits than its factorization.

40544451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4504945 (or 4504942 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 40544451 is about 6367.4524733209. The cubic root of 40544451 is about 343.5398655765.

Adding to 40544451 its reverse (15444504), we get a palindrome (55988955).

The spelling of 40544451 in words is "forty million, five hundred forty-four thousand, four hundred fifty-one".