511220419 has 2 divisors, whose sum is σ = 511220420. Its totient is φ = 511220418.

The previous prime is 511220393. The next prime is 511220467. The reversal of 511220419 is 914022115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511220419 - 2⁷ = 511220291 is a prime.

It is a super-2 number, since 2×511220419² = 522692633605071122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 511220393 and 511220402.

It is not a weakly prime, because it can be changed into another prime (511220219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255610209 + 255610210.

It is an arithmetic number, because the mean of its divisors is an integer number (255610210).

Almost surely, 2^511220419 is an apocalyptic number.

511220419 is a deficient number, since it is larger than the sum of its proper divisors (1).

511220419 is an equidigital number, since it uses as much as digits as its factorization.

511220419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 511220419 is about 22610.1839665227. The cubic root of 511220419 is about 799.5937619774.

The spelling of 511220419 in words is "five hundred eleven million, two hundred twenty thousand, four hundred nineteen".