40324561 has 8 divisors (see below), whose sum is σ = 43851240. Its totient is φ = 36926208.

The previous prime is 40324547. The next prime is 40324567. The reversal of 40324561 is 16542304.

It can be written as a sum of positive squares in 4 ways, for example, as 32706961 + 7617600 = 5719^2 + 2760^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40324561 - 2¹⁵ = 40291793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40324567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31426 + ... + 32683.

It is an arithmetic number, because the mean of its divisors is an integer number (5481405).

Almost surely, 2^40324561 is an apocalyptic number.

It is an amenable number.

40324561 is a deficient number, since it is larger than the sum of its proper divisors (3526679).

40324561 is a wasteful number, since it uses less digits than its factorization.

40324561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64163.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40324561 is about 6350.1622813909. The cubic root of 40324561 is about 342.9176846049.

Adding to 40324561 its reverse (16542304), we get a palindrome (56866865).

It can be divided in two parts, 403 and 24561, that added together give a square (24964 = 158²).

The spelling of 40324561 in words is "forty million, three hundred twenty-four thousand, five hundred sixty-one".