40626557 has 2 divisors, whose sum is σ = 40626558. Its totient is φ = 40626556.

The previous prime is 40626527. The next prime is 40626563. The reversal of 40626557 is 75562604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30316036 + 10310521 = 5506^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 40626557 - 2⁶ = 40626493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40626527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20313278 + 20313279.

It is an arithmetic number, because the mean of its divisors is an integer number (20313279).

Almost surely, 2^40626557 is an apocalyptic number.

It is an amenable number.

40626557 is a deficient number, since it is larger than the sum of its proper divisors (1).

40626557 is an equidigital number, since it uses as much as digits as its factorization.

40626557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 40626557 is about 6373.8965319497. The cubic root of 40626557 is about 343.7716084708.

The spelling of 40626557 in words is "forty million, six hundred twenty-six thousand, five hundred fifty-seven".