509970457 has 2 divisors, whose sum is σ = 509970458. Its totient is φ = 509970456.

The previous prime is 509970427. The next prime is 509970479. The reversal of 509970457 is 754079905.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378730521 + 131239936 = 19461^2 + 11456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509970457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (509970427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254985228 + 254985229.

It is an arithmetic number, because the mean of its divisors is an integer number (254985229).

Almost surely, 2^509970457 is an apocalyptic number.

It is an amenable number.

509970457 is a deficient number, since it is larger than the sum of its proper divisors (1).

509970457 is an equidigital number, since it uses as much as digits as its factorization.

509970457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 509970457 is about 22582.5254787856. The cubic root of 509970457 is about 798.9415465672.

The spelling of 509970457 in words is "five hundred nine million, nine hundred seventy thousand, four hundred fifty-seven".