51493270 has 32 divisors (see below), whose sum is σ = 98496000. Its totient is φ = 19345536.

The previous prime is 51493261. The next prime is 51493271. The reversal of 51493270 is 7239415.

51493270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51493271) 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, 8331 + ... + 13129.

It is an arithmetic number, because the mean of its divisors is an integer number (3078000).

Almost surely, 2^51493270 is an apocalyptic number.

51493270 is a deficient number, since it is larger than the sum of its proper divisors (47002730).

51493270 is a wasteful number, since it uses less digits than its factorization.

51493270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51493270 is about 7175.8811305651. The cubic root of 51493270 is about 372.0347358399.

The spelling of 51493270 in words is "fifty-one million, four hundred ninety-three thousand, two hundred seventy".