512021701 has 2 divisors, whose sum is σ = 512021702. Its totient is φ = 512021700.

The previous prime is 512021689. The next prime is 512021729. The reversal of 512021701 is 107120215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507420676 + 4601025 = 22526^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 512021701 - 2²⁷ = 377803973 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512021401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256010850 + 256010851.

It is an arithmetic number, because the mean of its divisors is an integer number (256010851).

Almost surely, 2^512021701 is an apocalyptic number.

It is an amenable number.

512021701 is a deficient number, since it is larger than the sum of its proper divisors (1).

512021701 is an equidigital number, since it uses as much as digits as its factorization.

512021701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 512021701 is about 22627.8965217715. The cubic root of 512021701 is about 800.0113024445.

Adding to 512021701 its reverse (107120215), we get a palindrome (619141916).

The spelling of 512021701 in words is "five hundred twelve million, twenty-one thousand, seven hundred one".