40915757 has 2 divisors, whose sum is σ = 40915758. Its totient is φ = 40915756.

The previous prime is 40915741. The next prime is 40915799. The reversal of 40915757 is 75751904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 2735716 = 6179^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 40915757 - 2⁴ = 40915741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40915757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40915057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20457878 + 20457879.

It is an arithmetic number, because the mean of its divisors is an integer number (20457879).

Almost surely, 2^40915757 is an apocalyptic number.

It is an amenable number.

40915757 is a deficient number, since it is larger than the sum of its proper divisors (1).

40915757 is an equidigital number, since it uses as much as digits as its factorization.

40915757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 40915757 is about 6396.5425817390. The cubic root of 40915757 is about 344.5853928607.

The spelling of 40915757 in words is "forty million, nine hundred fifteen thousand, seven hundred fifty-seven".