42553305 has 12 divisors (see below), whose sum is σ = 73759140. Its totient is φ = 22695072.

The previous prime is 42553279. The next prime is 42553307. The reversal of 42553305 is 50335524.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 34327881 = 2868^2 + 5859^2 .

It is not a de Polignac number, because 42553305 - 2⁷ = 42553177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42553307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 472770 + ... + 472859.

It is an arithmetic number, because the mean of its divisors is an integer number (6146595).

Almost surely, 2^42553305 is an apocalyptic number.

42553305 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42553305 is a deficient number, since it is larger than the sum of its proper divisors (31205835).

42553305 is a wasteful number, since it uses less digits than its factorization.

42553305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945640 (or 945637 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 42553305 is about 6523.2894309543. The cubic root of 42553305 is about 349.1224409809.

Adding to 42553305 its reverse (50335524), we get a palindrome (92888829).

The spelling of 42553305 in words is "forty-two million, five hundred fifty-three thousand, three hundred five".