40775857 has 2 divisors, whose sum is σ = 40775858. Its totient is φ = 40775856.

The previous prime is 40775831. The next prime is 40775863. The reversal of 40775857 is 75857704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37503376 + 3272481 = 6124^2 + 1809^2 .

It is a cyclic number.

It is not a de Polignac number, because 40775857 - 2¹⁵ = 40743089 is a prime.

It is not a weakly prime, because it can be changed into another prime (40775807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20387928 + 20387929.

It is an arithmetic number, because the mean of its divisors is an integer number (20387929).

Almost surely, 2^40775857 is an apocalyptic number.

It is an amenable number.

40775857 is a deficient number, since it is larger than the sum of its proper divisors (1).

40775857 is an equidigital number, since it uses as much as digits as its factorization.

40775857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274400, while the sum is 43.

The square root of 40775857 is about 6385.5976227758. The cubic root of 40775857 is about 344.1922065625.

The spelling of 40775857 in words is "forty million, seven hundred seventy-five thousand, eight hundred fifty-seven".