511404485 has 4 divisors (see below), whose sum is σ = 613685388. Its totient is φ = 409123584.

The previous prime is 511404469. The next prime is 511404499. The reversal of 511404485 is 584404115.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87291649 + 424112836 = 9343^2 + 20594^2 .

It is a cyclic number.

It is not a de Polignac number, because 511404485 - 2⁴ = 511404469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51140444 + ... + 51140453.

It is an arithmetic number, because the mean of its divisors is an integer number (153421347).

Almost surely, 2^511404485 is an apocalyptic number.

It is an amenable number.

511404485 is a deficient number, since it is larger than the sum of its proper divisors (102280903).

511404485 is a wasteful number, since it uses less digits than its factorization.

511404485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102280902.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 511404485 is about 22614.2540226292. The cubic root of 511404485 is about 799.6897156076.

The spelling of 511404485 in words is "five hundred eleven million, four hundred four thousand, four hundred eighty-five".