42551933 has 8 divisors (see below), whose sum is σ = 44545536. Its totient is φ = 40597200.

The previous prime is 42551923. The next prime is 42551939. The reversal of 42551933 is 33915524.

42551933 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42551933 - 2¹⁸ = 42289789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42551933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42551939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7466 + ... + 11867.

It is an arithmetic number, because the mean of its divisors is an integer number (5568192).

Almost surely, 2^42551933 is an apocalyptic number.

It is an amenable number.

42551933 is a deficient number, since it is larger than the sum of its proper divisors (1993603).

42551933 is a wasteful number, since it uses less digits than its factorization.

42551933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19435.

The product of its digits is 16200, while the sum is 32.

The square root of 42551933 is about 6523.1842684382. The cubic root of 42551933 is about 349.1186888154.

The spelling of 42551933 in words is "forty-two million, five hundred fifty-one thousand, nine hundred thirty-three".