514509649 has 2 divisors, whose sum is σ = 514509650. Its totient is φ = 514509648.

The previous prime is 514509647. The next prime is 514509673. The reversal of 514509649 is 946905415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458259649 + 56250000 = 21407^2 + 7500^2 .

It is a cyclic number.

It is not a de Polignac number, because 514509649 - 2¹ = 514509647 is a prime.

Together with 514509647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (514509647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257254824 + 257254825.

It is an arithmetic number, because the mean of its divisors is an integer number (257254825).

Almost surely, 2^514509649 is an apocalyptic number.

It is an amenable number.

514509649 is a deficient number, since it is larger than the sum of its proper divisors (1).

514509649 is an equidigital number, since it uses as much as digits as its factorization.

514509649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 514509649 is about 22682.8051395765. The cubic root of 514509649 is about 801.3049789840.

The spelling of 514509649 in words is "five hundred fourteen million, five hundred nine thousand, six hundred forty-nine".