51604266 has 32 divisors (see below), whose sum is σ = 124162560. Its totient is φ = 13967856.

The previous prime is 51604229. The next prime is 51604277. The reversal of 51604266 is 66240615.

51604266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 31536 + ... + 33131.

It is an arithmetic number, because the mean of its divisors is an integer number (3880080).

Almost surely, 2^51604266 is an apocalyptic number.

51604266 is an abundant number, since it is smaller than the sum of its proper divisors (72558294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51604266 is a wasteful number, since it uses less digits than its factorization.

51604266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64698.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 51604266 is about 7183.6109304444. The cubic root of 51604266 is about 372.3018563938.

The spelling of 51604266 in words is "fifty-one million, six hundred four thousand, two hundred sixty-six".