513420365 has 4 divisors (see below), whose sum is σ = 616104444. Its totient is φ = 410736288.

The previous prime is 513420319. The next prime is 513420371. The reversal of 513420365 is 563024315.

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 291350761 + 222069604 = 17069^2 + 14902^2 .

It is a cyclic number.

It is not a de Polignac number, because 513420365 - 2¹⁴ = 513403981 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, 51342032 + ... + 51342041.

It is an arithmetic number, because the mean of its divisors is an integer number (154026111).

Almost surely, 2^513420365 is an apocalyptic number.

It is an amenable number.

513420365 is a deficient number, since it is larger than the sum of its proper divisors (102684079).

513420365 is a wasteful number, since it uses less digits than its factorization.

513420365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102684078.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 513420365 is about 22658.7811896404. The cubic root of 513420365 is about 800.7390904089.

The spelling of 513420365 in words is "five hundred thirteen million, four hundred twenty thousand, three hundred sixty-five".