51530738 has 16 divisors (see below), whose sum is σ = 91385280. Its totient is φ = 21322896.

The previous prime is 51530737. The next prime is 51530747. The reversal of 51530738 is 83703515.

51530738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51530737) 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 7 ways as a sum of consecutive naturals, for example, 63056 + ... + 63867.

It is an arithmetic number, because the mean of its divisors is an integer number (5711580).

Almost surely, 2^51530738 is an apocalyptic number.

51530738 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51530738 is a deficient number, since it is larger than the sum of its proper divisors (39854542).

51530738 is a wasteful number, since it uses less digits than its factorization.

51530738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126961.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 51530738 is about 7178.4913456798. The cubic root of 51530738 is about 372.1249483923.

The spelling of 51530738 in words is "fifty-one million, five hundred thirty thousand, seven hundred thirty-eight".