40946551 has 2 divisors, whose sum is σ = 40946552. Its totient is φ = 40946550.

The previous prime is 40946537. The next prime is 40946597. The reversal of 40946551 is 15564904.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40946551 - 2¹⁷ = 40815479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40946351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20473275 + 20473276.

It is an arithmetic number, because the mean of its divisors is an integer number (20473276).

Almost surely, 2^40946551 is an apocalyptic number.

40946551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40946551 is an equidigital number, since it uses as much as digits as its factorization.

40946551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 40946551 is about 6398.9492106126. The cubic root of 40946551 is about 344.6718184207.

The spelling of 40946551 in words is "forty million, nine hundred forty-six thousand, five hundred fifty-one".