40261537 has 4 divisors (see below), whose sum is σ = 40470340. Its totient is φ = 40052736.

The previous prime is 40261531. The next prime is 40261547. The reversal of 40261537 is 73516204.

40261537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6806881 + 33454656 = 2609^2 + 5784^2 .

It is a cyclic number.

It is not a de Polignac number, because 40261537 - 2¹⁹ = 39737249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40261531) 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 in 3 ways as a sum of consecutive naturals, for example, 104112 + ... + 104497.

It is an arithmetic number, because the mean of its divisors is an integer number (10117585).

Almost surely, 2^40261537 is an apocalyptic number.

It is an amenable number.

40261537 is a deficient number, since it is larger than the sum of its proper divisors (208803).

40261537 is a wasteful number, since it uses less digits than its factorization.

40261537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208802.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 40261537 is about 6345.1979480549. The cubic root of 40261537 is about 342.7389406608.

The spelling of 40261537 in words is "forty million, two hundred sixty-one thousand, five hundred thirty-seven".