51804102 has 16 divisors (see below), whose sum is σ = 118409472. Its totient is φ = 14801160.

The previous prime is 51804097. The next prime is 51804139. The reversal of 51804102 is 20140815.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 616674 + ... + 616757.

It is an arithmetic number, because the mean of its divisors is an integer number (7400592).

Almost surely, 2^51804102 is an apocalyptic number.

51804102 is an abundant number, since it is smaller than the sum of its proper divisors (66605370).

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

51804102 is a wasteful number, since it uses less digits than its factorization.

51804102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233443.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 51804102 is about 7197.5066516121. The cubic root of 51804102 is about 372.7818133769.

Adding to 51804102 its reverse (20140815), we get a palindrome (71944917).

The spelling of 51804102 in words is "fifty-one million, eight hundred four thousand, one hundred two".