40255545 has 16 divisors (see below), whose sum is σ = 70264512. Its totient is φ = 19517760.

The previous prime is 40255531. The next prime is 40255549. The reversal of 40255545 is 54555204.

It is not a de Polignac number, because 40255545 - 2⁷ = 40255417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40255549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121822 + ... + 122151.

It is an arithmetic number, because the mean of its divisors is an integer number (4391532).

Almost surely, 2^40255545 is an apocalyptic number.

It is an amenable number.

40255545 is a deficient number, since it is larger than the sum of its proper divisors (30008967).

40255545 is a wasteful number, since it uses less digits than its factorization.

40255545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243992.

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 40255545 is about 6344.7257623951. The cubic root of 40255545 is about 342.7219368918.

The spelling of 40255545 in words is "forty million, two hundred fifty-five thousand, five hundred forty-five".