509452147 has 2 divisors, whose sum is σ = 509452148. Its totient is φ = 509452146.

The previous prime is 509452133. The next prime is 509452169. The reversal of 509452147 is 741254905.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509452147 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (509452247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254726073 + 254726074.

It is an arithmetic number, because the mean of its divisors is an integer number (254726074).

Almost surely, 2^509452147 is an apocalyptic number.

509452147 is a deficient number, since it is larger than the sum of its proper divisors (1).

509452147 is an equidigital number, since it uses as much as digits as its factorization.

509452147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 509452147 is about 22571.0466527363. The cubic root of 509452147 is about 798.6707859398.

The spelling of 509452147 in words is "five hundred nine million, four hundred fifty-two thousand, one hundred forty-seven".