513204162251 has 4 divisors (see below), whose sum is σ = 559859086104. Its totient is φ = 466549238400.

The previous prime is 513204162197. The next prime is 513204162269. The reversal of 513204162251 is 152261402315.

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

It is a cyclic number.

It is not a de Polignac number, because 513204162251 - 2³⁰ = 512130420427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513204962251) 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, 23327461910 + ... + 23327461931.

It is an arithmetic number, because the mean of its divisors is an integer number (139964771526).

Almost surely, 2^513204162251 is an apocalyptic number.

513204162251 is a deficient number, since it is larger than the sum of its proper divisors (46654923853).

513204162251 is a wasteful number, since it uses less digits than its factorization.

513204162251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46654923852.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 513204162251 its reverse (152261402315), we get a palindrome (665465564566).

The spelling of 513204162251 in words is "five hundred thirteen billion, two hundred four million, one hundred sixty-two thousand, two hundred fifty-one".