537564444 has 24 divisors (see below), whose sum is σ = 1260821520. Its totient is φ = 178258944.

The previous prime is 537564439. The next prime is 537564491. The reversal of 537564444 is 444465735.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 537564396 and 537564405.

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, 113739 + ... + 118370.

It is an arithmetic number, because the mean of its divisors is an integer number (52534230).

Almost surely, 2^537564444 is an apocalyptic number.

It is an amenable number.

537564444 is an abundant number, since it is smaller than the sum of its proper divisors (723257076).

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

537564444 is a wasteful number, since it uses less digits than its factorization.

537564444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232309 (or 232307 counting only the distinct ones).

The product of its digits is 806400, while the sum is 42.

The square root of 537564444 is about 23185.4360321302. The cubic root of 537564444 is about 813.0991589709.

The spelling of 537564444 in words is "five hundred thirty-seven million, five hundred sixty-four thousand, four hundred forty-four".