40275551 has 2 divisors, whose sum is σ = 40275552. Its totient is φ = 40275550.

The previous prime is 40275517. The next prime is 40275581. The reversal of 40275551 is 15557204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40275551 - 2¹⁰ = 40274527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40275511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20137775 + 20137776.

It is an arithmetic number, because the mean of its divisors is an integer number (20137776).

Almost surely, 2^40275551 is an apocalyptic number.

40275551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40275551 is an equidigital number, since it uses as much as digits as its factorization.

40275551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 40275551 is about 6346.3021516471. The cubic root of 40275551 is about 342.7787022355.

The spelling of 40275551 in words is "forty million, two hundred seventy-five thousand, five hundred fifty-one".