511450979 has 4 divisors (see below), whose sum is σ = 550793376. Its totient is φ = 472108584.

The previous prime is 511450957. The next prime is 511451009. The reversal of 511450979 is 979054115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511450979 - 2²⁸ = 243015523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511450879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19671179 + ... + 19671204.

It is an arithmetic number, because the mean of its divisors is an integer number (137698344).

Almost surely, 2^511450979 is an apocalyptic number.

511450979 is a deficient number, since it is larger than the sum of its proper divisors (39342397).

511450979 is a wasteful number, since it uses less digits than its factorization.

511450979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39342396.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 511450979 is about 22615.2819792281. The cubic root of 511450979 is about 799.7139492934.

The spelling of 511450979 in words is "five hundred eleven million, four hundred fifty thousand, nine hundred seventy-nine".