40501805 has 8 divisors (see below), whose sum is σ = 49519512. Its totient is φ = 31789888.

The previous prime is 40501801. The next prime is 40501817. The reversal of 40501805 is 50810504.

It can be written as a sum of positive squares in 4 ways, for example, as 1800964 + 38700841 = 1342^2 + 6221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40501805 - 2² = 40501801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40501801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76154 + ... + 76683.

It is an arithmetic number, because the mean of its divisors is an integer number (6189939).

Almost surely, 2^40501805 is an apocalyptic number.

It is an amenable number.

40501805 is a deficient number, since it is larger than the sum of its proper divisors (9017707).

40501805 is a wasteful number, since it uses less digits than its factorization.

40501805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152895.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 40501805 is about 6364.1028432922. The cubic root of 40501805 is about 343.4193744413.

The spelling of 40501805 in words is "forty million, five hundred one thousand, eight hundred five".