40055745 has 16 divisors (see below), whose sum is σ = 64186560. Its totient is φ = 21330624.

The previous prime is 40055731. The next prime is 40055767. The reversal of 40055745 is 54755004.

It is not a de Polignac number, because 40055745 - 2⁵ = 40055713 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10791 + ... + 14019.

It is an arithmetic number, because the mean of its divisors is an integer number (4011660).

Almost surely, 2^40055745 is an apocalyptic number.

It is an amenable number.

40055745 is a deficient number, since it is larger than the sum of its proper divisors (24130815).

40055745 is a wasteful number, since it uses less digits than its factorization.

40055745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 40055745 is about 6328.9608151734. The cubic root of 40055745 is about 342.1539866055.

The spelling of 40055745 in words is "forty million, fifty-five thousand, seven hundred forty-five".