51247123 has 16 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 46612800.

The previous prime is 51247121. The next prime is 51247127. The reversal of 51247123 is 32174215.

It is a happy number.

51247123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51247123 - 2¹ = 51247121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51247121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98103 + ... + 98623.

It is an arithmetic number, because the mean of its divisors is an integer number (3507840).

Almost surely, 2^51247123 is an apocalyptic number.

51247123 is a deficient number, since it is larger than the sum of its proper divisors (4878317).

51247123 is a wasteful number, since it uses less digits than its factorization.

51247123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738.

The product of its digits is 1680, while the sum is 25.

The square root of 51247123 is about 7158.7095904220. The cubic root of 51247123 is about 371.4409913359.

The spelling of 51247123 in words is "fifty-one million, two hundred forty-seven thousand, one hundred twenty-three".