51663075 has 48 divisors (see below), whose sum is σ = 89431776. Its totient is φ = 26291200.

The previous prime is 51663047. The next prime is 51663089. The reversal of 51663075 is 57036615.

It is not a de Polignac number, because 51663075 - 2⁵ = 51663043 is a prime.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 162817 + ... + 163133.

It is an arithmetic number, because the mean of its divisors is an integer number (1863162).

Almost surely, 2^51663075 is an apocalyptic number.

51663075 is a deficient number, since it is larger than the sum of its proper divisors (37768701).

51663075 is a wasteful number, since it uses less digits than its factorization.

51663075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 51663075 is about 7187.7030406104. The cubic root of 51663075 is about 372.4432296410.

The spelling of 51663075 in words is "fifty-one million, six hundred sixty-three thousand, seventy-five".