514661947 has 2 divisors, whose sum is σ = 514661948. Its totient is φ = 514661946.

The previous prime is 514661879. The next prime is 514661957. The reversal of 514661947 is 749166415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-514661947 is a prime.

It is not a weakly prime, because it can be changed into another prime (514661957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257330973 + 257330974.

It is an arithmetic number, because the mean of its divisors is an integer number (257330974).

Almost surely, 2^514661947 is an apocalyptic number.

514661947 is a deficient number, since it is larger than the sum of its proper divisors (1).

514661947 is an equidigital number, since it uses as much as digits as its factorization.

514661947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 514661947 is about 22686.1620156429. The cubic root of 514661947 is about 801.3840349076.

The spelling of 514661947 in words is "five hundred fourteen million, six hundred sixty-one thousand, nine hundred forty-seven".