51474243 has 16 divisors (see below), whose sum is σ = 69672960. Its totient is φ = 33800256.

The previous prime is 51474221. The next prime is 51474251. The reversal of 51474243 is 34247415.

51474243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51474243 - 2¹² = 51470147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51474243.

It is not an unprimeable number, because it can be changed into a prime (51474263) 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, 63223 + ... + 64031.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^51474243 is an apocalyptic number.

51474243 is a deficient number, since it is larger than the sum of its proper divisors (18198717).

51474243 is a wasteful number, since it uses less digits than its factorization.

51474243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106.

The product of its digits is 13440, while the sum is 30.

The square root of 51474243 is about 7174.5552475397. Note that the first 3 decimals coincide. The cubic root of 51474243 is about 371.9889073464.

The spelling of 51474243 in words is "fifty-one million, four hundred seventy-four thousand, two hundred forty-three".