513036434 has 4 divisors (see below), whose sum is σ = 769554654. Its totient is φ = 256518216.

The previous prime is 513036427. The next prime is 513036437. The reversal of 513036434 is 434630315.

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

It can be written as a sum of positive squares in only one way, i.e., 497156209 + 15880225 = 22297^2 + 3985^2 .

It is a super-2 number, since 2×513036434² = 526412765222872712, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 513036397 and 513036406.

It is not an unprimeable number, because it can be changed into a prime (513036437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128259107 + ... + 128259110.

Almost surely, 2^513036434 is an apocalyptic number.

513036434 is a deficient number, since it is larger than the sum of its proper divisors (256518220).

513036434 is a wasteful number, since it uses less digits than its factorization.

513036434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256518219.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 513036434 is about 22650.3075917304. The cubic root of 513036434 is about 800.5394455414.

Adding to 513036434 its reverse (434630315), we get a palindrome (947666749).

The spelling of 513036434 in words is "five hundred thirteen million, thirty-six thousand, four hundred thirty-four".