40531245 has 8 divisors (see below), whose sum is σ = 64850016. Its totient is φ = 21616656.

The previous prime is 40531217. The next prime is 40531259. The reversal of 40531245 is 54213504.

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

It is not a de Polignac number, because 40531245 - 2¹⁸ = 40269101 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351027 + ... + 1351056.

It is an arithmetic number, because the mean of its divisors is an integer number (8106252).

Almost surely, 2^40531245 is an apocalyptic number.

It is an amenable number.

40531245 is a deficient number, since it is larger than the sum of its proper divisors (24318771).

40531245 is a wasteful number, since it uses less digits than its factorization.

40531245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702091.

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

The square root of 40531245 is about 6366.4153964378. The cubic root of 40531245 is about 343.5025626492.

Adding to 40531245 its reverse (54213504), we get a palindrome (94744749).

The spelling of 40531245 in words is "forty million, five hundred thirty-one thousand, two hundred forty-five".