42553444 has 12 divisors (see below), whose sum is σ = 74681964. Its totient is φ = 21215744.

The previous prime is 42553409. The next prime is 42553451. The reversal of 42553444 is 44435524.

It can be written as a sum of positive squares in 2 ways, for example, as 9375844 + 33177600 = 3062^2 + 5760^2 .

It is a super-2 number, since 2×42553444² = 3621591192522272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13657 + ... + 16480.

It is an arithmetic number, because the mean of its divisors is an integer number (6223497).

Almost surely, 2^42553444 is an apocalyptic number.

It is an amenable number.

42553444 is a deficient number, since it is larger than the sum of its proper divisors (32128520).

42553444 is a wasteful number, since it uses less digits than its factorization.

42553444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30494 (or 30492 counting only the distinct ones).

The product of its digits is 38400, while the sum is 31.

The square root of 42553444 is about 6523.3000850796. The cubic root of 42553444 is about 349.1228211157.

Adding to 42553444 its reverse (44435524), we get a palindrome (86988968).

The spelling of 42553444 in words is "forty-two million, five hundred fifty-three thousand, four hundred forty-four".