507766139 has 2 divisors, whose sum is σ = 507766140. Its totient is φ = 507766138.

The previous prime is 507766037. The next prime is 507766229. The reversal of 507766139 is 931667705.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 507766139 - 2¹² = 507762043 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 507766139.

It is not a weakly prime, because it can be changed into another prime (507766439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253883069 + 253883070.

It is an arithmetic number, because the mean of its divisors is an integer number (253883070).

Almost surely, 2^507766139 is an apocalyptic number.

507766139 is a deficient number, since it is larger than the sum of its proper divisors (1).

507766139 is an equidigital number, since it uses as much as digits as its factorization.

507766139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 507766139 is about 22533.6667899390. Note that the first 3 decimals coincide. The cubic root of 507766139 is about 797.7887577032.

The spelling of 507766139 in words is "five hundred seven million, seven hundred sixty-six thousand, one hundred thirty-nine".