40506453 has 32 divisors (see below), whose sum is σ = 66393600. Its totient is φ = 24245568.

The previous prime is 40506451. The next prime is 40506467. The reversal of 40506453 is 35460504.

It is not a de Polignac number, because 40506453 - 2¹ = 40506451 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40506451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11428 + ... + 14546.

It is an arithmetic number, because the mean of its divisors is an integer number (2074800).

Almost surely, 2^40506453 is an apocalyptic number.

It is an amenable number.

40506453 is a deficient number, since it is larger than the sum of its proper divisors (25887147).

40506453 is a wasteful number, since it uses less digits than its factorization.

40506453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178 (or 3172 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 40506453 is about 6364.4680060473. The cubic root of 40506453 is about 343.4325109110.

Adding to 40506453 its reverse (35460504), we get a palindrome (75966957).

The spelling of 40506453 in words is "forty million, five hundred six thousand, four hundred fifty-three".