513121052 has 12 divisors (see below), whose sum is σ = 926928576. Its totient is φ = 248284320.

The previous prime is 513121051. The next prime is 513121079. The reversal of 513121052 is 250121315.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513121051) 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, 2068913 + ... + 2069160.

It is an arithmetic number, because the mean of its divisors is an integer number (77244048).

Almost surely, 2^513121052 is an apocalyptic number.

It is an amenable number.

513121052 is a deficient number, since it is larger than the sum of its proper divisors (413807524).

513121052 is a wasteful number, since it uses less digits than its factorization.

513121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138108 (or 4138106 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 513121052 is about 22652.1754363681. The cubic root of 513121052 is about 800.5834556210.

Adding to 513121052 its reverse (250121315), we get a palindrome (763242367).

The spelling of 513121052 in words is "five hundred thirteen million, one hundred twenty-one thousand, fifty-two".