51063642 has 32 divisors (see below), whose sum is σ = 129686400. Its totient is φ = 14589504.

The previous prime is 51063637. The next prime is 51063643. The reversal of 51063642 is 24636015.

51063642 is a `hidden beast` number, since 5 + 10 + 6 + 3 + 642 = 666.

51063642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51063643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67167 + ... + 67922.

It is an arithmetic number, because the mean of its divisors is an integer number (4052700).

Almost surely, 2^51063642 is an apocalyptic number.

51063642 is an abundant number, since it is smaller than the sum of its proper divisors (78622758).

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

51063642 is a wasteful number, since it uses less digits than its factorization.

51063642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135107 (or 135101 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 51063642 is about 7145.8828705766. The cubic root of 51063642 is about 370.9971689421.

Adding to 51063642 its reverse (24636015), we get a palindrome (75699657).

The spelling of 51063642 in words is "fifty-one million, sixty-three thousand, six hundred forty-two".