40181057 has 8 divisors (see below), whose sum is σ = 46002432. Its totient is φ = 34380000.

The previous prime is 40181041. The next prime is 40181077. The reversal of 40181057 is 75018104.

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 40181057 - 2⁴ = 40181041 is a prime.

It is a super-2 number, since 2×40181057² = 3229034683274498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40181017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569 + ... + 8982.

It is an arithmetic number, because the mean of its divisors is an integer number (5750304).

Almost surely, 2^40181057 is an apocalyptic number.

It is an amenable number.

40181057 is a deficient number, since it is larger than the sum of its proper divisors (5821375).

40181057 is an equidigital number, since it uses as much as digits as its factorization.

40181057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10159.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 40181057 is about 6338.8529719501. The cubic root of 40181057 is about 342.5104179260.

The spelling of 40181057 in words is "forty million, one hundred eighty-one thousand, fifty-seven".