513102121 has 4 divisors (see below), whose sum is σ = 586402432. Its totient is φ = 439801812.

The previous prime is 513102113. The next prime is 513102179. The reversal of 513102121 is 121201315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 513102121 - 2³ = 513102113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 513102095 and 513102104.

It is not an unprimeable number, because it can be changed into a prime (513102221) 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, 36650145 + ... + 36650158.

It is an arithmetic number, because the mean of its divisors is an integer number (146600608).

Almost surely, 2^513102121 is an apocalyptic number.

It is an amenable number.

513102121 is a deficient number, since it is larger than the sum of its proper divisors (73300311).

513102121 is an equidigital number, since it uses as much as digits as its factorization.

513102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73300310.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 513102121 is about 22651.7575697781. The cubic root of 513102121 is about 800.5736099704.

Adding to 513102121 its reverse (121201315), we get a palindrome (634303436).

The spelling of 513102121 in words is "five hundred thirteen million, one hundred two thousand, one hundred twenty-one".