40775591 has 8 divisors (see below), whose sum is σ = 42140784. Its totient is φ = 39424320.

The previous prime is 40775563. The next prime is 40775593. The reversal of 40775591 is 19557704.

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 40775591 - 2²² = 36581287 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 (40775593) 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, 2651 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (5267598).

Almost surely, 2^40775591 is an apocalyptic number.

40775591 is a deficient number, since it is larger than the sum of its proper divisors (1365193).

40775591 is a wasteful number, since it uses less digits than its factorization.

40775591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6961.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 40775591 is about 6385.5767946208. The cubic root of 40775591 is about 344.1914581186.

The spelling of 40775591 in words is "forty million, seven hundred seventy-five thousand, five hundred ninety-one".