509010881 has 2 divisors, whose sum is σ = 509010882. Its totient is φ = 509010880.

The previous prime is 509010869. The next prime is 509010913. The reversal of 509010881 is 188010905.

It is a happy number.

It is an a-pointer prime, because the next prime (509010913) can be obtained adding 509010881 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508908481 + 102400 = 22559^2 + 320^2 .

It is a cyclic number.

It is not a de Polignac number, because 509010881 - 2²² = 504816577 is a prime.

It is a super-2 number, since 2×509010881² = 518184153952792322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (509010851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254505440 + 254505441.

It is an arithmetic number, because the mean of its divisors is an integer number (254505441).

Almost surely, 2^509010881 is an apocalyptic number.

It is an amenable number.

509010881 is a deficient number, since it is larger than the sum of its proper divisors (1).

509010881 is an equidigital number, since it uses as much as digits as its factorization.

509010881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 509010881 is about 22561.2694899910. The cubic root of 509010881 is about 798.4401276622.

The spelling of 509010881 in words is "five hundred nine million, ten thousand, eight hundred eighty-one".