513452123 has 2 divisors, whose sum is σ = 513452124. Its totient is φ = 513452122.

The previous prime is 513452087. The next prime is 513452131. The reversal of 513452123 is 321254315.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513452123 is a prime.

It is a super-2 number, since 2×513452123² = 527266165226414258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 513452092 and 513452101.

It is not a weakly prime, because it can be changed into another prime (513452153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256726061 + 256726062.

It is an arithmetic number, because the mean of its divisors is an integer number (256726062).

Almost surely, 2^513452123 is an apocalyptic number.

513452123 is a deficient number, since it is larger than the sum of its proper divisors (1).

513452123 is an equidigital number, since it uses as much as digits as its factorization.

513452123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 26.

The square root of 513452123 is about 22659.4819667176. The cubic root of 513452123 is about 800.7556001733.

The spelling of 513452123 in words is "five hundred thirteen million, four hundred fifty-two thousand, one hundred twenty-three".