40507507 has 2 divisors, whose sum is σ = 40507508. Its totient is φ = 40507506.

The previous prime is 40507457. The next prime is 40507541. The reversal of 40507507 is 70570504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40507507 - 2¹⁹ = 39983219 is a prime.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20253753 + 20253754.

It is an arithmetic number, because the mean of its divisors is an integer number (20253754).

Almost surely, 2^40507507 is an apocalyptic number.

40507507 is a deficient number, since it is larger than the sum of its proper divisors (1).

40507507 is an equidigital number, since it uses as much as digits as its factorization.

40507507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 40507507 is about 6364.5508089731. The cubic root of 40507507 is about 343.4354896522.

It can be divided in two parts, 40507 and 507, that added together give a palindrome (41014).

The spelling of 40507507 in words is "forty million, five hundred seven thousand, five hundred seven".