40526257 has 2 divisors, whose sum is σ = 40526258. Its totient is φ = 40526256.

The previous prime is 40526251. The next prime is 40526261. The reversal of 40526257 is 75262504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34999056 + 5527201 = 5916^2 + 2351^2 .

It is a cyclic number.

It is not a de Polignac number, because 40526257 - 2¹⁵ = 40493489 is a prime.

It is not a weakly prime, because it can be changed into another prime (40526251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20263128 + 20263129.

It is an arithmetic number, because the mean of its divisors is an integer number (20263129).

Almost surely, 2^40526257 is an apocalyptic number.

It is an amenable number.

40526257 is a deficient number, since it is larger than the sum of its proper divisors (1).

40526257 is an equidigital number, since it uses as much as digits as its factorization.

40526257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 40526257 is about 6366.0236411751. The cubic root of 40526257 is about 343.4884709604.

It can be divided in two parts, 405 and 26257, that added together give a palindrome (26662).

The spelling of 40526257 in words is "forty million, five hundred twenty-six thousand, two hundred fifty-seven".