40481657 has 2 divisors, whose sum is σ = 40481658. Its totient is φ = 40481656.

The previous prime is 40481627. The next prime is 40481659. The reversal of 40481657 is 75618404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34798201 + 5683456 = 5899^2 + 2384^2 .

It is a cyclic number.

It is not a de Polignac number, because 40481657 - 2¹⁴ = 40465273 is a prime.

Together with 40481659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40481659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20240828 + 20240829.

It is an arithmetic number, because the mean of its divisors is an integer number (20240829).

Almost surely, 2^40481657 is an apocalyptic number.

It is an amenable number.

40481657 is a deficient number, since it is larger than the sum of its proper divisors (1).

40481657 is an equidigital number, since it uses as much as digits as its factorization.

40481657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 40481657 is about 6362.5197052740. The cubic root of 40481657 is about 343.3624192742.

The spelling of 40481657 in words is "forty million, four hundred eighty-one thousand, six hundred fifty-seven".