51142663 has 16 divisors (see below), whose sum is σ = 60695712. Its totient is φ = 42480000.

The previous prime is 51142657. The next prime is 51142667. The reversal of 51142663 is 36624115.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51142663 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51142667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12673 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (3793482).

Almost surely, 2^51142663 is an apocalyptic number.

51142663 is a deficient number, since it is larger than the sum of its proper divisors (9553049).

51142663 is a wasteful number, since it uses less digits than its factorization.

51142663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666.

The product of its digits is 4320, while the sum is 28.

The square root of 51142663 is about 7151.4098609994. The cubic root of 51142663 is about 371.1884430507.

Adding to 51142663 its reverse (36624115), we get a palindrome (87766778).

It can be divided in two parts, 5114 and 2663, that added together give a palindrome (7777).

The spelling of 51142663 in words is "fifty-one million, one hundred forty-two thousand, six hundred sixty-three".