51213102 has 16 divisors (see below), whose sum is σ = 102876240. Its totient is φ = 16996032.

The previous prime is 51213091. The next prime is 51213119. The reversal of 51213102 is 20131215.

It is a congruent number.

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, 17263 + ... + 20010.

It is an arithmetic number, because the mean of its divisors is an integer number (6429765).

Almost surely, 2^51213102 is an apocalyptic number.

51213102 is an abundant number, since it is smaller than the sum of its proper divisors (51663138).

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

51213102 is a wasteful number, since it uses less digits than its factorization.

51213102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37507.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51213102 is about 7156.3329995187. The cubic root of 51213102 is about 371.3587779964.

Adding to 51213102 its reverse (20131215), we get a palindrome (71344317).

It can be divided in two parts, 51213 and 102, that added together give a palindrome (51315).

The spelling of 51213102 in words is "fifty-one million, two hundred thirteen thousand, one hundred two".