40481557 has 8 divisors (see below), whose sum is σ = 40875800. Its totient is φ = 40089600.

The previous prime is 40481549. The next prime is 40481563. The reversal of 40481557 is 75518404.

40481557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11655396 + 28826161 = 3414^2 + 5369^2 .

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 40481557 - 2³ = 40481549 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 (40481527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67057 + ... + 67657.

It is an arithmetic number, because the mean of its divisors is an integer number (5109475).

Almost surely, 2^40481557 is an apocalyptic number.

It is an amenable number.

40481557 is a deficient number, since it is larger than the sum of its proper divisors (394243).

40481557 is a wasteful number, since it uses less digits than its factorization.

40481557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143.

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 40481557 is about 6362.5118467473. The cubic root of 40481557 is about 343.3621365431.

The spelling of 40481557 in words is "forty million, four hundred eighty-one thousand, five hundred fifty-seven".