537821856 has 240 divisors, whose sum is σ = 1859524128. Its totient is φ = 150336000.

The previous prime is 537821839. The next prime is 537821863. The reversal of 537821856 is 658128735.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 369931 + ... + 371381.

Almost surely, 2^537821856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 537821856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929762064).

537821856 is an abundant number, since it is smaller than the sum of its proper divisors (1321702272).

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

537821856 is a wasteful number, since it uses less digits than its factorization.

537821856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1480 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 537821856 is about 23190.9865249411. The cubic root of 537821856 is about 813.2289220682.

The spelling of 537821856 in words is "five hundred thirty-seven million, eight hundred twenty-one thousand, eight hundred fifty-six".