40512553 has 2 divisors, whose sum is σ = 40512554. Its totient is φ = 40512552.

The previous prime is 40512539. The next prime is 40512559. The reversal of 40512553 is 35521504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31494544 + 9018009 = 5612^2 + 3003^2 .

It is a cyclic number.

It is not a de Polignac number, because 40512553 - 2⁹ = 40512041 is a prime.

It is not a weakly prime, because it can be changed into another prime (40512559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20256276 + 20256277.

It is an arithmetic number, because the mean of its divisors is an integer number (20256277).

Almost surely, 2^40512553 is an apocalyptic number.

It is an amenable number.

40512553 is a deficient number, since it is larger than the sum of its proper divisors (1).

40512553 is an equidigital number, since it uses as much as digits as its factorization.

40512553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 40512553 is about 6364.9472110930. The cubic root of 40512553 is about 343.4497495895.

The spelling of 40512553 in words is "forty million, five hundred twelve thousand, five hundred fifty-three".