513980773 has 2 divisors, whose sum is σ = 513980774. Its totient is φ = 513980772.

The previous prime is 513980641. The next prime is 513980821. The reversal of 513980773 is 377089315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273637764 + 240343009 = 16542^2 + 15503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513980773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513680773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256990386 + 256990387.

It is an arithmetic number, because the mean of its divisors is an integer number (256990387).

Almost surely, 2^513980773 is an apocalyptic number.

It is an amenable number.

513980773 is a deficient number, since it is larger than the sum of its proper divisors (1).

513980773 is an equidigital number, since it uses as much as digits as its factorization.

513980773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 513980773 is about 22671.1440602366. The cubic root of 513980773 is about 801.0303250723.

The spelling of 513980773 in words is "five hundred thirteen million, nine hundred eighty thousand, seven hundred seventy-three".