511234405 has 16 divisors (see below), whose sum is σ = 670515264. Its totient is φ = 371105280.

The previous prime is 511234333. The next prime is 511234411. The reversal of 511234405 is 504432115.

It is a happy number.

It is not a de Polignac number, because 511234405 - 2¹⁵ = 511201637 is a prime.

It is a super-2 number, since 2×511234405² = 522721233711408050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 511234405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21589 + ... + 38581.

It is an arithmetic number, because the mean of its divisors is an integer number (41907204).

Almost surely, 2^511234405 is an apocalyptic number.

511234405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

511234405 is a deficient number, since it is larger than the sum of its proper divisors (159280859).

511234405 is a wasteful number, since it uses less digits than its factorization.

511234405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17556.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 511234405 is about 22610.4932498166. The cubic root of 511234405 is about 799.6010536895.

The spelling of 511234405 in words is "five hundred eleven million, two hundred thirty-four thousand, four hundred five".