42553779 has 8 divisors (see below), whose sum is σ = 57537792. Its totient is φ = 27969480.

The previous prime is 42553739. The next prime is 42553799. The reversal of 42553779 is 97735524.

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

It is not a de Polignac number, because 42553779 - 2⁹ = 42553267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42553779.

It is not an unprimeable number, because it can be changed into a prime (42553739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99679 + ... + 100104.

It is an arithmetic number, because the mean of its divisors is an integer number (7192224).

Almost surely, 2^42553779 is an apocalyptic number.

42553779 is a deficient number, since it is larger than the sum of its proper divisors (14984013).

42553779 is a wasteful number, since it uses less digits than its factorization.

42553779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199857.

The product of its digits is 264600, while the sum is 42.

The square root of 42553779 is about 6523.3257622167. The cubic root of 42553779 is about 349.1237372643.

The spelling of 42553779 in words is "forty-two million, five hundred fifty-three thousand, seven hundred seventy-nine".