40345453 has 2 divisors, whose sum is σ = 40345454. Its totient is φ = 40345452.

The previous prime is 40345441. The next prime is 40345463. The reversal of 40345453 is 35454304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 1432809 = 6238^2 + 1197^2 .

It is a cyclic number.

It is not a de Polignac number, because 40345453 - 2¹⁷ = 40214381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40345423) 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 as a sum of consecutive naturals, namely, 20172726 + 20172727.

It is an arithmetic number, because the mean of its divisors is an integer number (20172727).

Almost surely, 2^40345453 is an apocalyptic number.

It is an amenable number.

40345453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40345453 is an equidigital number, since it uses as much as digits as its factorization.

40345453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 40345453 is about 6351.8070657097. The cubic root of 40345453 is about 342.9768958250.

Adding to 40345453 its reverse (35454304), we get a palindrome (75799757).

The spelling of 40345453 in words is "forty million, three hundred forty-five thousand, four hundred fifty-three".