51663355 has 8 divisors (see below), whose sum is σ = 64134000. Its totient is φ = 39905376.

The previous prime is 51663347. The next prime is 51663371. The reversal of 51663355 is 55336615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51663355 - 2³ = 51663347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51663355.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178005 + ... + 178294.

It is an arithmetic number, because the mean of its divisors is an integer number (8016750).

Almost surely, 2^51663355 is an apocalyptic number.

51663355 is a deficient number, since it is larger than the sum of its proper divisors (12470645).

51663355 is a wasteful number, since it uses less digits than its factorization.

51663355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356333.

The product of its digits is 40500, while the sum is 34.

The square root of 51663355 is about 7187.7225182947. The cubic root of 51663355 is about 372.4439024872.

The spelling of 51663355 in words is "fifty-one million, six hundred sixty-three thousand, three hundred fifty-five".