42553449 has 12 divisors (see below), whose sum is σ = 62965812. Its totient is φ = 27676800.

The previous prime is 42553409. The next prime is 42553451. The reversal of 42553449 is 94435524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23474025 + 19079424 = 4845^2 + 4368^2 .

It is not a de Polignac number, because 42553449 - 2¹⁷ = 42422377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42553409) 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, 57292 + ... + 58029.

It is an arithmetic number, because the mean of its divisors is an integer number (5247151).

Almost surely, 2^42553449 is an apocalyptic number.

It is an amenable number.

42553449 is a deficient number, since it is larger than the sum of its proper divisors (20412363).

42553449 is a wasteful number, since it uses less digits than its factorization.

42553449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115368 (or 115365 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 42553449 is about 6523.3004683212. The cubic root of 42553449 is about 349.1228347896.

The spelling of 42553449 in words is "forty-two million, five hundred fifty-three thousand, four hundred forty-nine".