5251646123 has 4 divisors (see below), whose sum is σ = 5258028048. Its totient is φ = 5245264200.

The previous prime is 5251646117. The next prime is 5251646131. The reversal of 5251646123 is 3216461525.

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 5251646123 - 2¹⁴ = 5251629739 is a prime.

It is a super-2 number, since 2×5251646123² = 55159574002441862258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251646173) 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, 3189728 + ... + 3191373.

It is an arithmetic number, because the mean of its divisors is an integer number (1314507012).

Almost surely, 2^5251646123 is an apocalyptic number.

5251646123 is a deficient number, since it is larger than the sum of its proper divisors (6381925).

5251646123 is an equidigital number, since it uses as much as digits as its factorization.

5251646123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381924.

The product of its digits is 43200, while the sum is 35.

The square root of 5251646123 is about 72468.2421685527. The cubic root of 5251646123 is about 1738.1949532203.

The spelling of 5251646123 in words is "five billion, two hundred fifty-one million, six hundred forty-six thousand, one hundred twenty-three".