40756081 has 4 divisors (see below), whose sum is σ = 41130100. Its totient is φ = 40382064.

The previous prime is 40756073. The next prime is 40756087. The reversal of 40756081 is 18065704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28259856 + 12496225 = 5316^2 + 3535^2 .

It is a cyclic number.

It is not a de Polignac number, because 40756081 - 2³ = 40756073 is a prime.

It is a super-2 number, since 2×40756081² = 3322116276957122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40756087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186846 + ... + 187063.

It is an arithmetic number, because the mean of its divisors is an integer number (10282525).

Almost surely, 2^40756081 is an apocalyptic number.

It is an amenable number.

40756081 is a deficient number, since it is larger than the sum of its proper divisors (374019).

40756081 is a wasteful number, since it uses less digits than its factorization.

40756081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374018.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 40756081 is about 6384.0489503136. The cubic root of 40756081 is about 344.1365539756.

The spelling of 40756081 in words is "forty million, seven hundred fifty-six thousand, eighty-one".