512121977 has 2 divisors, whose sum is σ = 512121978. Its totient is φ = 512121976.

The previous prime is 512121971. The next prime is 512121983. The reversal of 512121977 is 779121215.

It is a balanced prime because it is at equal distance from previous prime (512121971) and next prime (512121983).

It can be written as a sum of positive squares in only one way, i.e., 458773561 + 53348416 = 21419^2 + 7304^2 .

It is a cyclic number.

It is not a de Polignac number, because 512121977 - 2⁸ = 512121721 is a prime.

It is not a weakly prime, because it can be changed into another prime (512121971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256060988 + 256060989.

It is an arithmetic number, because the mean of its divisors is an integer number (256060989).

Almost surely, 2^512121977 is an apocalyptic number.

It is an amenable number.

512121977 is a deficient number, since it is larger than the sum of its proper divisors (1).

512121977 is an equidigital number, since it uses as much as digits as its factorization.

512121977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 35.

The square root of 512121977 is about 22630.1121738272. The cubic root of 512121977 is about 800.0635246431.

The spelling of 512121977 in words is "five hundred twelve million, one hundred twenty-one thousand, nine hundred seventy-seven".