516772123 has 4 divisors (see below), whose sum is σ = 590596720. Its totient is φ = 442947528.

The previous prime is 516772111. The next prime is 516772133. The reversal of 516772123 is 321277615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516772123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (516772133) 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, 36912288 + ... + 36912301.

It is an arithmetic number, because the mean of its divisors is an integer number (147649180).

Almost surely, 2^516772123 is an apocalyptic number.

516772123 is a deficient number, since it is larger than the sum of its proper divisors (73824597).

516772123 is an equidigital number, since it uses as much as digits as its factorization.

516772123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73824596.

The product of its digits is 17640, while the sum is 34.

The square root of 516772123 is about 22732.6224400090. The cubic root of 516772123 is about 802.4777984496.

The spelling of 516772123 in words is "five hundred sixteen million, seven hundred seventy-two thousand, one hundred twenty-three".