511421534 has 16 divisors (see below), whose sum is σ = 831411168. Its totient is φ = 234535392.

The previous prime is 511421531. The next prime is 511421549. The reversal of 511421534 is 435124115.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511421531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58562 + ... + 66725.

It is an arithmetic number, because the mean of its divisors is an integer number (51963198).

Almost surely, 2^511421534 is an apocalyptic number.

511421534 is a deficient number, since it is larger than the sum of its proper divisors (319989634).

511421534 is a wasteful number, since it uses less digits than its factorization.

511421534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125459.

The product of its digits is 2400, while the sum is 26.

The square root of 511421534 is about 22614.6309720057. The cubic root of 511421534 is about 799.6986020884.

Adding to 511421534 its reverse (435124115), we get a palindrome (946545649).

The spelling of 511421534 in words is "five hundred eleven million, four hundred twenty-one thousand, five hundred thirty-four".