40507541 has 2 divisors, whose sum is σ = 40507542. Its totient is φ = 40507540.

The previous prime is 40507507. The next prime is 40507547. The reversal of 40507541 is 14570504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 14853316 = 5065^2 + 3854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40507541 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40507541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40507547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20253770 + 20253771.

It is an arithmetic number, because the mean of its divisors is an integer number (20253771).

Almost surely, 2^40507541 is an apocalyptic number.

It is an amenable number.

40507541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40507541 is an equidigital number, since it uses as much as digits as its factorization.

40507541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 40507541 is about 6364.5534800173. The cubic root of 40507541 is about 343.4355857398.

The spelling of 40507541 in words is "forty million, five hundred seven thousand, five hundred forty-one".