40557277 has 2 divisors, whose sum is σ = 40557278. Its totient is φ = 40557276.

The previous prime is 40557271. The next prime is 40557289. The reversal of 40557277 is 77275504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39614436 + 942841 = 6294^2 + 971^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40557277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40557271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20278638 + 20278639.

It is an arithmetic number, because the mean of its divisors is an integer number (20278639).

Almost surely, 2^40557277 is an apocalyptic number.

It is an amenable number.

40557277 is a deficient number, since it is larger than the sum of its proper divisors (1).

40557277 is an equidigital number, since it uses as much as digits as its factorization.

40557277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68600, while the sum is 37.

The square root of 40557277 is about 6368.4595468606. The cubic root of 40557277 is about 343.5760873665.

The spelling of 40557277 in words is "forty million, five hundred fifty-seven thousand, two hundred seventy-seven".