52145844 has 24 divisors (see below), whose sum is σ = 125599488. Its totient is φ = 16821120.

The previous prime is 52145831. The next prime is 52145881. The reversal of 52145844 is 44854125.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69717 + ... + 70460.

It is an arithmetic number, because the mean of its divisors is an integer number (5233312).

Almost surely, 2^52145844 is an apocalyptic number.

It is an amenable number.

52145844 is an abundant number, since it is smaller than the sum of its proper divisors (73453644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52145844 is a wasteful number, since it uses less digits than its factorization.

52145844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140215 (or 140213 counting only the distinct ones).

The product of its digits is 25600, while the sum is 33.

The square root of 52145844 is about 7221.2079321953. The cubic root of 52145844 is about 373.5997414662.

Adding to 52145844 its reverse (44854125), we get a palindrome (96999969).

The spelling of 52145844 in words is "fifty-two million, one hundred forty-five thousand, eight hundred forty-four".