42553811 has 4 divisors (see below), whose sum is σ = 43703952. Its totient is φ = 41403672.

The previous prime is 42553807. The next prime is 42553829. The reversal of 42553811 is 11835524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42553811 - 2² = 42553807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42553871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575015 + ... + 575088.

It is an arithmetic number, because the mean of its divisors is an integer number (10925988).

Almost surely, 2^42553811 is an apocalyptic number.

42553811 is a deficient number, since it is larger than the sum of its proper divisors (1150141).

42553811 is a wasteful number, since it uses less digits than its factorization.

42553811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150140.

The product of its digits is 4800, while the sum is 29.

The square root of 42553811 is about 6523.3282149529. The cubic root of 42553811 is about 349.1238247767.

The spelling of 42553811 in words is "forty-two million, five hundred fifty-three thousand, eight hundred eleven".