40915745 has 24 divisors (see below), whose sum is σ = 54509112. Its totient is φ = 29452800.

The previous prime is 40915741. The next prime is 40915757. The reversal of 40915745 is 54751904.

It can be written as a sum of positive squares in 12 ways, for example, as 24690961 + 16224784 = 4969^2 + 4028^2 .

It is not a de Polignac number, because 40915745 - 2² = 40915741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40915741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34055 + ... + 35235.

It is an arithmetic number, because the mean of its divisors is an integer number (2271213).

Almost surely, 2^40915745 is an apocalyptic number.

It is an amenable number.

40915745 is a deficient number, since it is larger than the sum of its proper divisors (13593367).

40915745 is a wasteful number, since it uses less digits than its factorization.

40915745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 40915745 is about 6396.5416437322. The cubic root of 40915745 is about 344.5853591734.

The spelling of 40915745 in words is "forty million, nine hundred fifteen thousand, seven hundred forty-five".