51442663 has 8 divisors (see below), whose sum is σ = 55736208. Its totient is φ = 47289984.

The previous prime is 51442661. The next prime is 51442669. The reversal of 51442663 is 36624415.

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 51442663 - 2¹ = 51442661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51442661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34456 + ... + 35917.

It is an arithmetic number, because the mean of its divisors is an integer number (6967026).

Almost surely, 2^51442663 is an apocalyptic number.

51442663 is a deficient number, since it is larger than the sum of its proper divisors (4293545).

51442663 is a wasteful number, since it uses less digits than its factorization.

51442663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70433.

The product of its digits is 17280, while the sum is 31.

The square root of 51442663 is about 7172.3540765916. The cubic root of 51442663 is about 371.9128187228.

The spelling of 51442663 in words is "fifty-one million, four hundred forty-two thousand, six hundred sixty-three".