51663306 has 32 divisors (see below), whose sum is σ = 109712448. Its totient is φ = 16162560.

The previous prime is 51663281. The next prime is 51663307. The reversal of 51663306 is 60336615.

It is not an unprimeable number, because it can be changed into a prime (51663307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70116 + ... + 70848.

It is an arithmetic number, because the mean of its divisors is an integer number (3428514).

Almost surely, 2^51663306 is an apocalyptic number.

51663306 is an abundant number, since it is smaller than the sum of its proper divisors (58049142).

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

51663306 is a wasteful number, since it uses less digits than its factorization.

51663306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 51663306 is about 7187.7191097037. The cubic root of 51663306 is about 372.4437847393.

The spelling of 51663306 in words is "fifty-one million, six hundred sixty-three thousand, three hundred six".