40863551 has 2 divisors, whose sum is σ = 40863552. Its totient is φ = 40863550.

The previous prime is 40863527. The next prime is 40863587. The reversal of 40863551 is 15536804.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40863551 - 2²² = 36669247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40863451) 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, 20431775 + 20431776.

It is an arithmetic number, because the mean of its divisors is an integer number (20431776).

Almost surely, 2^40863551 is an apocalyptic number.

40863551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40863551 is an equidigital number, since it uses as much as digits as its factorization.

40863551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 40863551 is about 6392.4604809103. The cubic root of 40863551 is about 344.4387738651.

It can be divided in two parts, 40863 and 551, that added together give a palindrome (41414).

The spelling of 40863551 in words is "forty million, eight hundred sixty-three thousand, five hundred fifty-one".