40621577 has 2 divisors, whose sum is σ = 40621578. Its totient is φ = 40621576.

The previous prime is 40621573. The next prime is 40621613. The reversal of 40621577 is 77512604.

40621577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36228361 + 4393216 = 6019^2 + 2096^2 .

It is a cyclic number.

It is not a de Polignac number, because 40621577 - 2² = 40621573 is a prime.

It is a super-2 number, since 2×40621577² = 3300225035933858, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40621571) 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 as a sum of consecutive naturals, namely, 20310788 + 20310789.

It is an arithmetic number, because the mean of its divisors is an integer number (20310789).

Almost surely, 2^40621577 is an apocalyptic number.

It is an amenable number.

40621577 is a deficient number, since it is larger than the sum of its proper divisors (1).

40621577 is an equidigital number, since it uses as much as digits as its factorization.

40621577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 40621577 is about 6373.5058641222. The cubic root of 40621577 is about 343.7575613984.

The spelling of 40621577 in words is "forty million, six hundred twenty-one thousand, five hundred seventy-seven".