40455553 has 2 divisors, whose sum is σ = 40455554. Its totient is φ = 40455552.

The previous prime is 40455517. The next prime is 40455581. The reversal of 40455553 is 35555404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38229489 + 2226064 = 6183^2 + 1492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40455553 is a prime.

It is not a weakly prime, because it can be changed into another prime (40455353) 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 as a sum of consecutive naturals, namely, 20227776 + 20227777.

It is an arithmetic number, because the mean of its divisors is an integer number (20227777).

Almost surely, 2^40455553 is an apocalyptic number.

It is an amenable number.

40455553 is a deficient number, since it is larger than the sum of its proper divisors (1).

40455553 is an equidigital number, since it uses as much as digits as its factorization.

40455553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 40455553 is about 6360.4679859268. The cubic root of 40455553 is about 343.2885993392.

The spelling of 40455553 in words is "forty million, four hundred fifty-five thousand, five hundred fifty-three".