51020102 has 16 divisors (see below), whose sum is σ = 89498112. Its totient is φ = 21357000.

The previous prime is 51020083. The next prime is 51020107. The reversal of 51020102 is 20102015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020107) 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, 41774 + ... + 42977.

It is an arithmetic number, because the mean of its divisors is an integer number (5593632).

Almost surely, 2^51020102 is an apocalyptic number.

51020102 is a deficient number, since it is larger than the sum of its proper divisors (38478010).

51020102 is a wasteful number, since it uses less digits than its factorization.

51020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84803.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 51020102 is about 7142.8357113964. The cubic root of 51020102 is about 370.8916939612.

Adding to 51020102 its reverse (20102015), we get a palindrome (71122117).

The spelling of 51020102 in words is "fifty-one million, twenty thousand, one hundred two".