42533551 has 2 divisors, whose sum is σ = 42533552. Its totient is φ = 42533550.

The previous prime is 42533527. The next prime is 42533573. The reversal of 42533551 is 15533524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42533551 - 2²¹ = 40436399 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 (42533501) 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, 21266775 + 21266776.

It is an arithmetic number, because the mean of its divisors is an integer number (21266776).

Almost surely, 2^42533551 is an apocalyptic number.

42533551 is a deficient number, since it is larger than the sum of its proper divisors (1).

42533551 is an equidigital number, since it uses as much as digits as its factorization.

42533551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9000, while the sum is 28.

The square root of 42533551 is about 6521.7751417846. The cubic root of 42533551 is about 349.0684096733.

The spelling of 42533551 in words is "forty-two million, five hundred thirty-three thousand, five hundred fifty-one".