508985281 has 32 divisors (see below), whose sum is σ = 637260800. Its totient is φ = 396809280.

The previous prime is 508985237. The next prime is 508985291. The reversal of 508985281 is 182589805.

It is not a de Polignac number, because 508985281 - 2¹⁷ = 508854209 is a prime.

It is a super-2 number, since 2×508985281² = 518132032549297922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (508985291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348130 + ... + 349588.

It is an arithmetic number, because the mean of its divisors is an integer number (19914400).

Almost surely, 2^508985281 is an apocalyptic number.

It is an amenable number.

508985281 is a deficient number, since it is larger than the sum of its proper divisors (128275519).

508985281 is a wasteful number, since it uses less digits than its factorization.

508985281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589.

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 508985281 is about 22560.7021388963. The cubic root of 508985281 is about 798.4267419562.

The spelling of 508985281 in words is "five hundred eight million, nine hundred eighty-five thousand, two hundred eighty-one".